One high-fashion brand that's actually a legitimate first name, though still linked to the tainted Adolph. 

Adolfo

Afonso

Alberto is the Italian, Spanish and Portuguese variation of Albert and lends a more unusual and fashionable edge to this name which is still a grandpa name to many.

Alberto

What's the difference between Alexander, the usual English spelling of this deeply classical name, and Alexandre, the French version? English speakers might find the proper French pronunciation challenging: a-lehk-SAHN-dreh, but that last syllable is barely pronounced. Americans might an an a or an ee on the end of the name, or simply pronounce it as Alexander, for better or worse.

Alexandre

The Finnish form of Andrew is featured in mythology as Antero Vipunen, a giant in Finland's national legend the Kalevala

Antero

Aquilino

With the current craze for ancient Roman names, variations of the Latin Augustus with its majestic meaning are becoming more popular in many cultures. Month name August, also drawn from the original Augustus, is the most popular form in the US, but Augusto may start showing up on international popularity lists.

Augusto

Albano

André

António

Aristides

This Latinate form of Bernard hovered in the lower regions of the US Top 1000 from the late 1940s until 2006, possibly inspired by the character in West Side Story.

Bernardo

Bartolomeu

Benjamim

Báltazar

Caetano

César

Daniel is one of only a handful of male names that sounds both classic and modern, strong yet approachable, and popular but not cliched. It also has a solid Old Testament pedigree. The only real downside: There are about 10,000 Daniels named each year, making it a less than distinctive choice. 
 
Daniel is derived from the Hebrew name Daniyyel, from the elements din, meaning "judge," and ’el, "God." The Book of Daniel in the Old Testament describes the Jewish prophet’s life of captivity in Babylon and visions of the last days of Earth. 
 Daniel was the name of one of the greatest biblical heroes, with the inspiring story of the prophet whose faith protected him when he was thrown into a den of lions. Yet Daniel does not seem as solemn and weighty a name as other Old Testament names like Abraham and Ezekiel. 

Popular since the days of Daniel Webster and Daniel Boone,
Daniel is a perennial favorite, in the Top 15 <a href="https://nameberry.com/boys-names">names for boys</a> every year since 1972. Daniel ranks first among all <a href="https://nameberry.com/search/boys-names/d">baby names starting with D</a>. 

Daniel's appeal is international, from Ireland to Israel, Finland to Chile. And its nicknames—Danny and Dan—make it sound even friendlier, though, as with other classics, many modern parents are opting to use the name in full.

Daniel

Davide

Dinis

Diogo is the much-less-known brother of Diego, both forms of James, which is itself a form of the Biblical Jacob. And Diego itself probably started life as a short form of Santiago, aka Saint Jago, aka Saint James. 

That's a lot of variations for one name. In Diogo's case, Americans will forever mistake it for Diego, which was used for nearly 3000 baby boys in the US last year, while Diogo was given to fewer than five.

Diogo

Incredibly handsome and super smooth, Duarte sounds like it came straight out of a romance novel. You almost wouldn’t believe it’s derived from Edward.

Duarte

Edgar is an Old English name historically associated with the tenth century English king known as Edgar the Peaceful. There was also a King Edgar of Scotland.
 Edgar has been a stalwart on the US <a href="https://nameberry.com/popular-names">popular names</a> lists, not dipping below the Top 400 until 2022, and is especially popular (as is Edgardo) with Latino families.
 Edgar plays a key role in King Lear and has had several distinguished namesakes, including artist Degas, Tarzan creator Edgar Rice Burroughs, and author and poet Edgar Allan Poe. In terms of style, however, most would rate it a distant third to Edward and Edmund. 
 Trivia tidbit: Joan Rivers' daughter Melissa named her son Edgar after her father, but he is called by his middle name Cooper.

Edgar

A stalwart of Latin nomenclature that could work just as well for Anglos. Proof lies with the celebrity birth announcement — Hilaria and Alec Baldwin named their fifth child Eduardo Pau Lucas in 2020. This doesn't seem to have much impact on other parents, though: over 900 boys received the name in 2021, but the number is steadily decreasing.

Eduardo

Estêvão

Eurico

While Faust, who sold his soul to the devil, was anything but fortunate, this Latinate variation is more commonly heard and accepted.

Fausto

Can you hear the drums Fernando? Although 58% of Nameberries prefer Ferdinand to Fernando, the Iberian variant has a softer, more romantic feel that makes it a better fit with all those Javiers, Lorenzos and Matteos.

Fernando

Francisco is one of the more popular <a href="https://nameberry.com/baby-names/496/spanish-names-for-boys">Spanish names for boys</a> in the US, which is unsurprising given its popularity back in Spain and Portugal as well as Latin America, coupled with its classic status. It also has a cool hipster vibe to it, given the reputation of the city of San Francisco.

Francisco

Frederico

Fernão

Filipe

Félix

Gabriel has become a biblical favorite, an angelic choice that's lighter and less patriarchal than some of his Old Testament brethren. Derived from the Hebrew name Gavri’el, Gabriel is taken from the elements gever, meaning "strong," and ’el, in reference to God.
 
In Abrahamic religions, Gabriel is the archangel who heralded the news of Jesus' birth, and appears in Christian, Jewish and Muslim texts. He presides over Paradise, serving as the angel of mercy, life, joy, judgment, truth and dreams. 
 In addition to all his other responsibilities, Gabriel is the patron saint of broadcasters and diplomats, and he governs Mondays and the month of January, making Gabriel one of the top <a href="https://nameberry.com/list/629/71-wonderful-names-for-january-babies">January baby names</a>. 
 
Gabriel has proven itself a friendly and appealing alternative to Michael, that other, long-reigning archangel. Gabriel enjoys remarkable international popularity, ranking in the Top 100 in countries as diverse as Israel and Iceland, Chile and Croatia. It is currently the Number 1 boys' name in France.
 Parents of Gabriels of varying ages include Mick Jagger and Jerry Hall, Daniel Day-Lewis and Isabelle Adjani, Jason Alexander, Meredith Vieira, and Mia Farrow.

Gabriel

The name of one of the Three Wise Men from the East is heard in several European countries, but rarely here. 

Gaspar

Pronounced zheel, it's a dashing conquistador; as gill, it's the nice and slightly boring guy down the street. 

Guilherme

Well used in the Latino and Italian-American communities. 

Gustavo

Gastão

Gonçalo

Henrique

Musical association with Igor Stravinsky, but also Dr. Frankenstein's right-hand man. 

Igor

German variation of Jeremiah. It entered the US Top 1000 for the first time in 2016.

Jeremias

A softer take on Joaquin or a quirkier version of Joachim, depending on how you look at it.

Joaquim

The classic Jorge is one of the most popular and classic <a href="https://nameberry.com/baby-names/496/spanish-names-for-boys">Spanish names for boys</a> in the US. Some Latine families pronounce it the same way as George.

Jorge

What with Paul Simon's classic lyric about Julio down by the schoolyard and several distinguished bearers, this livelier Spanish version of Julius is completely familiar to the non-Hispanic community and would make a great choice for a bicultural family. NFL Atlanta Falcons star Julio Jones bears this name.

Julio

Jerónimo

Josué

José

João

For centuries this name was associated primarily with the towering figure of Italian Renaissance painter-scientist-inventor Leonardo da Vinci, and was scarcely used outside the Latin culture. 

But then along came Leonardo DiCaprio, who was supposedly given the name because his pregnant mother felt her first kick while looking at a da Vinci painting in the Ufizzi Gallery in Florence, and who would make the name young and handsome and multi-cultural. 
 Leonardo is a popular choice among other attractive Italian and <a href="https://nameberry.com/baby-names/806/spanish-names-for-boys">Spanish names for boys</a>, and its cousin Leo is popular as well.

Leonardo

Lino

Lucas is a Top 10 boys' name with a slightly-less-popular almost-identical twin brother, Luke. Like Elijah and Elias, Lucas and Luke come from the same root and have the same meaning and so feel even more popular than they are.
 
The Latin derivation of the Greek Loukas, the name's meaning references Lucania, an ancient territory in Southern Italy. Along with Luke, Lucas is also related to international name star Luca, while the similar Lucius and Lucian derive from a different root and have a different meaning.
 Lucas is enjoying tremendous international success, popular throughout the English-speaking world as well as in a diverse range of countries throughout Europe and Latin America, including Scandinavia, France, Germany, Spain, and Brazil. This makes Lucas the perfect choice for a cross-cultural family.
 Lucas has long been a favorite of TV scriptwriters, from the early black-and-white days of The Rifleman (Chuck Connors as Lucas McCain) to the schoolteacher series Lucas Tanner to the more contemporary One Tree Hill. On the literary side, the name appears as Lucas Beauchamp in William Faulkner's Intruder in the Dust and Light in August.
 Lucas Cranach was an important German Renaissance painter and printmaker; Lucas Samaras is an eccentric Greek-born American contemporary artist. Some will associate the name with director George Lucas.

Lucas

Lopo

Lourenço

Luís

Lázaro

Popular among Hispanic communities but also used internationally, Manuel is a name with a regal history. 
 
In use since the 13th century, Manuel was likely brought to Spain and Portugal from the Byzantine Empire thanks to connections between their royal families. Borne by two Byzantine emperors and two Portuguese kings, Manuel has been used fairly consistently throughout history and into the present.

In the US, Manuel has been a staple feature in the Top 1000 since the data began to be collected in the late 19th century. Until recently, this Spanish variant had always outranked its English counterpart, but since the mid 2000s, Manuel has been in decline while Emmanuel has been on the rise.

Still in the Top 500, but at its lowest ever rank, Manuel is currently given to around 1000 boys each year in the States.
 
Across the globe, Manuel has fared better. It remains well used in Spain, Portugal and Italy, across South America, and in The Netherlands and Germany too.

Manny and Manu are popular nickname options, with Manu gaining traction as a stand-alone choice in The Netherlands.

Manuel

Both the Spanish Marcelo and Italian Marcello would work well for children of any backgrounds. 

Marcelo

Simple and universal, Marco is a Latin classic that would make a much livelier namesake for an Uncle Mark. It was used for her son by actress Jill Hennessy and goes well with surnames of any nationality.
 Marco, related to the Roman god Mars, has long been associated with Marco Polo, the thirteenth century Venetian merchant-traveler who was instrumental in introducing Europeans to Asian culture. Eugene O'Neill wrote a play called Marco Millions, based on the life of Marco Polo.
 More recent noteworthy Marcos are Marco Andretti, Indy race car driver grandson of the legendary Mario, and Marco Rubio, Florida senator. The name can also be found in two early Dr. Seuss books.

Marco

Another culture's slant on Mark, sometimes associated with former president of the Philippines Ferdinand Marcos and his shoe-collecting wife, Imelda. 

Marcos

Mateus

The single T version of Matias is, like Mateo, the Spanish variation of the Hebrew Biblical Matthias or Matthew, while the double T version as in Mattias and Matteo is usually Italian.

Matias

This is a Spanish variation of Maximilian that has begun to gain some popularity. It has a luxurious feel -- maybe it's the suggestion of "millions"? -- but this is one of those <a href="https://nameberry.com/baby-names/161/spanish-names">Spanish baby names</a> that come with Anglicized nicknames that can make it work across cultures.

Maximiliano

Mike Tyson put a twist on his own name by naming a son Miguel. It's the first name of Cervantes, the great Spanish novelist and poet who wrote Don Quixote.

Miguel has always charted in the US, but peaked in the 80s and 90s along with other classic Hispanic names such as Jesus, Luis, and Jorge.

Older Gen Zs may know of the popular PBS kids show from the early 2000s, Maya and Miguel, while kids today have the adorable, guitar-playing Miguel from the sensational Pixar film Coco.

Miguel

Martim

Martinho

Martins

Marçal

Mário

Máximo

Nuno

Otelo

Pancho is a bit more problematic than such similar names as Pablo and Paco because of the Pancho Villa association. 

Pancho

Paulo suffers in comparison to the richer and more authentic-sounding Paolo. 

Paulo

Pedro is one of the most familiar <a href="https://nameberry.com/baby-names/496/spanish-names-for-boys">Spanish names for boys</a>, via baseball star Pedro Rodriguez and many others. 

Like its Anglo equivalent Peter, Pedro is not as popular as it once was. But it's among the elite group of boys' names that has ALWAYS ranked among the US Top 1000.

That final O sound, so fashionable today, gives this name an extra spin of style.

Pedro

Energetic, sunny, and slightly romantic, Rafael is a popular choice in Germany, Spain, Portugal, and Croatia. Used internationally, Rafael is a Spanish variation of Raphael, that lends itself easily to the nicknames Rafi, Rafa and Rafe.
 
Derived from a Biblical, Hebrew name, meaning "God has healed", Rafael is associated with both an archangel in The Old Testament and with the master Renaissance artist.
 
With its lighter, more concise appearance and Its hint of flair and fun, the Rafael spelling is perhaps most famously borne by tennis play, Rafael Nadal. 
 
Popular but not too popular in multiple different countries around the world, Rafael sits in the Top 100 in Mexico, Switzerland, Chile, and Uruguay,.
 
In the UK, it climbed to #181 in 2022 (though Rafferty and Raphael still outrank it), while in the US, it has been the favored spelling since the 1920s.
 Given to 1500 babies in the US each year, Rafael fits in with currently trending choices like Jaziel and Azriel, while still feeling perfectly familiar.

Rafael

Raul and French brother Raoul are much more appealing than flat-footed daddy Ralph. Puerto Rican actor Raul Julia, who starred in the Addams Family movies, brought fame to the name before his death in 1994.

Raul

Renato

Richard is far from fashionable, but Ricardo is one of the most popular <a href="https://nameberry.com/baby-names/496/spanish-names-for-boys">Spanish names for boys</a> in the US. And it does sound far more appealing that the English version.

Ricardo

Roberto

Romanticizes Rudolph and distances the name from the red-nosed reindeer. After remaining steadily in the US Top 500 for much of the twentieth century, Rodolfo has been slipping of late.

Rodolfo

Rhythmically appealing international spin on the stiff original. 

Rodrigo

This charming mini name began life as a nickname for Rodrigo but has since taken on a life of its own, ranking as an independent name in Portugal, it’s country of origin. If you’re looking to honor a Rodrigo, Roger, or Roderick in your life, Rui is an appealing international option. Ruy is a spelling variation that is more commonly seen in Spain.
 
Rui had a brief appearance on the charts in France from 1967-1981.

Rogério

A common epithet of Christ, frequently heard in the Hispanic community, Salvador could also be a great choice for artistic parents, given the continuing popularity of Dada and Surrealist painter Salvador Dalí. (If Monet and Raphael get a look in, why not Salvador?)

Salvador

Samuel has been so popular for so long that it's hard to believe it's still climbing, at its highest point since the 1890s. 
 
This biblical name's popularity is somewhat propelled by the likability of the friendly nickname Sam, which returned to favor along with fellow former Grandpa names like Max and Gus. Sam is now often used on its own, for girls as well as boys.
 Samuel is derived from the Hebrew name Shemu’el, meaning "told by God." In the Old Testament, Samuel was one of the great judges and prophets of the Israelites, destined for a holy life from birth. He established the Hebrew monarchy, anointing both Saul and David as kings.
 
High-profile celebs who have chosen Samuel for their sons include Jennifer Garner and Ben Affleck, Jack Black, and Naomi Watts and Liev Schreiber, and Keri Russell and Matthew Rhys.

Samuel

Name of nine provincial Spanish kings, but more likely to conjure up Sancho Panza, the hapless squire of Don Quixote. 

Sancho

Santiago is a spirited Spanish name with great crossover potential. It's a place-name (a city in Chile), a surname, and the name of the patron saint of Spain. 
 
Santiago has been rising through the popularity charts in the US for more than 30 years now, and shows no signs of slowing down. It might make a creative honor name for an ancestral James.
 Santiago has been featured in several works of fiction: it was the main character's name in Hemingway's The Old Man and the Sea, in Gabriel Garcia Marquez's Chronicle of a Death Foretold and Paolo Coehlo's The Alchemist, and there was also a Santiago in Anne Rice's Interview with the Vampire.

Santiago

Sebastião

Simão

With brother name Theodore ranking in the US top 10, this alternative might appeal to parents looking to honor Italian, Portuguese, or Spanish heritage.

Teodoro

Tiago, also spelled Thiago, is a popular Portuguese boys' name derived from the more formal Santiago but these days usually used on its own. English speakers won't intuitively get the pronunciation but this might be a creative way to honor an ancestral James or Diego.

Tiago

Tobias is one of a number of s-ending <a href="https://nameberry.com/boys-names">boys' names</a> that are riding a wave of popularity. With its Old Testament-Dickensian feel, it's a name with a distinguished pedigree. 
Tobias is the Greek form of the Hebrew Tobiah, which was derived from the name Toviyah. Toviyah was created from the elements tov, meaning "good" and yah, representing the Hebrew God. Tobias is the name of several biblical figures but is primarily associated with the story of Tobias and the Angel.
 A contemporary bearer is Tobias Wolff, author of A Boy's Life. Tobias Smollett was a major eighteenth century Scottish novelist. Tobias Snape, meanwhile, is a Harry Potter character.
 
The short form Toby has a life of its own, used independently at least as far back as Shakespeare's time, with Sir Toby Belch in Twelfth Night. Toby also was the name of a character on The West Wing. Actor Tobey Maguire was born Tobias and named his son Otis Tobias.
 
There is also the rarely used but still viable daddy of them all --Tobiah, the name of a rebel Hebrew king

Tobias

Teodorico

Teófilo

Timóteo

Tomás

Tomé

Ana's list "Favorite Portuguese Names for Boys" of 114 great name ideas: Adolfo - Óscar!

Favorite Portuguese Names for Boys

All this are according to the Portuguese naming laws