In this country, more recognizable with the Alistair spelling. 

Alasdair

To Americans, a quintessential British name, introduced to the U.S. public by suave journalist/PBS Masterpiece Theater host Alastair Cook. Sometimes used in the U.S. by parents with Scottish heritage.

Alastair

Alastaire

Commonly heard as a nickname for Alejandro, but a rare sight on the birth certificate. Ale has only made the US charts for boys twice, once in 2005 and again in 2018.

Although it's rarely given in its own right, Ale is a very common nickname for Latinate variations of Alexandra, including Alejandra and Alessandra.

Alec, though an old nickname for Alexander, is much fresher sounding than Alex, with the additional advantage, at least to some parents, of being distinctly male (there are as many girl Alexes these days as there are boys). While Alec has a clipped British image, it's actually one of the classic <a href="https://nameberry.com/baby-names/508/greek-names-for-boys">Greek names for boys</a>, by way of father name Alexander.
 Alec Baldwin is by far the best known current bearer of the name. In the past there have been actor Alec Guinness and writer Alec Waugh.

Alec

Aleister

Very popular in Catalonia, in part because of its use by a number of pro athletes. English speakers, though, may interpret it as a "yoonek" spelling of Alex.

Aleix

Alejandra, the Spanish form of this popular and multivaried name, has fans both in and outside the Latino community. Still, it has lost ground since its peak in the 1990s.

Alejandra

Softer and smoother than Alexander, this classic <a href="https://nameberry.com/baby-names/496/spanish-names-for-boys">Spanish name for boys</a> has made a seamless transition to this culture. Adding to its current impact: the Lady Gaga song Alejandro .

Alejandro

Another appealing member of the Alexandrian clan. 

Alejo

Alek

The Russian variation of Alex or Alec is familiar to some as a girl name through African supermodel Alek Weks. A trailblazer for non-European beauty in the 90’s, Weks makes this intriguing alternative to popular Alex feel chic. For your little girl, this may be a new twist on Alexa or an innovative short form of Alexandra.

Aleksandr

Aleksandra is the preferred spelling in many Eastern European languages and cultures, but for English-speakers it's ironically more confusing if also perfectly phonetically clear.

Aleksandra

Aleksei

Aleksej is the Slovene form of Alexios, making it a cognate of Alexis.

Aleksej

This softened version is even prettier than the original.


Alessandra

Young Canadian pop singer Alessia Cara has given this spicy-sounding name a new lease on life, propelling it into the Top 1000 in 2016. (It was one of the year's fastest-rising girls' names.) The main risk is that it feels so close to Alexa, Alicia, Alexis and Alyssa-- all becoming overused -- that it could be mistaken for one of those more familiar names. 

Alessia

Alessio, simpler than the related Alessandro, would be a welcome settler here. 

Alessio

The independent Alex has become a classic in its own right. One of the truest <a href="https://nameberry.com/unisex-names">unisex names</a>, Alex is used almost equally for both sexes. Alex is used both on its own and as a short form of formal names of both genders, such as Alexander, Alexandra, and Alexis.

Alex

One of the most evenly divided unisex names these days; strong and energetic, if overused, for both genders. 

Alexa was a steadily popular modern classic until Amazon's virtual assistant Alexa was released in 2013. It remains relatively well used in the US despite this, though its standing keeps dropping for obvious reasons. Too bad, because it's a strong and pretty name (which is probably why Amazon used it.)

Alexa

Alexander has been in a Top 25 boys' name in the US for 30 years now. But namers are still attracted to its imposing historic pedigree.
 Alexander is derived from the Greek name Aléxandros, composed of the elements aléxein, meaning "to defend," and aner, meaning "man." 
 
According to Greek legend, the first Alexander was Paris, who was given the nickname Alexander by the shepherds whose flocks he defended against robbers. He was followed by Alexander the Great, aka Alexander III, who conquered much of Asia.
 
A royal name in Scotland, Alexander is still highly popular there. In Gaelic, the name became Alasdair; in Spain, Alejandro; and in Italy, Alessandro.
 
The noble Alexander has led to the popularity of many spinoffs, such as Alex, Zander, Xan and Zan, along with female versions such as Alexandra, Alexis, and the unfortunate Alexa.
 Among the many notable Alexanders in history, standouts are Hamilton, Graham Bell, Fleming, Pope and Haig.
 Naomi Watts and Liev Schreiber's Alexander is known as Sasha.

Alexander

Alexandra fell out of the Top 100 for the first time since 1983 in 2015 but is still a popular choice. Strong, tasteful, and elegant, Alexandra remains a chic modern classic with a solid historic pedigree.
 
Alexandra is the feminine form of Alexander, which ultimately derived from the Greek components alexein, meaning "to defend," and anēr, "man." In Greek mythology, Alexandra was an epithet of the goddess Hera.
 
Alexandra was made fashionable in the English-speaking world by the Danish princess who married England's King Edward VII in 1863, and there have been other royal bearers in both Britain and Russia. Alexandra is the present queen's first middle name. Widely used in Russia, Alexandras can be found in the works of Dostoevsky and Chekhov.
 
International variations include Alessandra and Alejandra. Alexandra offers an array of softer nicknames, from the gender-neutral Alex to the bouncy Lexi to the more dramatic Xandra.

Alexandra

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

Alexandretta

Alexandria turns Alexandra into a more distinctive place-name, in both Egypt and Virginia.

Alexandria

Alexandrina is the most elaborate and unusual of the Alex- girls's names.The real first name of Queen Victoria, who was given it in honor of her godfather, Alexander I of Russia (her childhood nickname was Drina), it would make a distinctive pick, even though some might find five syllables a bit much. It was particularly popular in Scotland in the 1930s.

Alexandrina

Alexandra is a name with many international variations, elaborations and short forms, and Alexandrine is one of the more unusual.  Another, Alexandrina, was the first name of Queen Victoria.

Alexandrine

Alexandros

This unusual form of Alexandra might be seen and pronounced as a combination of Alex and Anne.

Alexane

Alexcis

Alexe

Alexei could well join the legion of Alex names popular in the US. There are countless opportunities to liven up Alexander, and Alexei (or Alexey) is one of the most straightforward and appealing.

Alexei

Alexes

Alexha

This diminutive, similar to Alex or Alexis, has been yo-yoing in popularity since the turn of the 21st century.

Alexia

This spin on the "Alex" prefix was the 88th most popular girl name in Scotland in 1900.

Alexina

Alexine

Very popular on its native turf, foreign-sounding here. 

Alexios

This name leapt into the female column via vixen Alexis Carrington on 'Dynasty" in the 1980s. It's more popular for girls, but it's still a widely used boys' names and is one of the most <a href="https://nameberry.com/unisex-names">popular unisex names</a> in the US today.

Alexis is an ancient (male) saints' name as well as the name of a third century BC comic poet. In the Alexius version, it was the name of several Byzantine emperors.

Alexis

Alexis, a one-time exclusively-<a href="https://nameberry.com/boys-names">boys’ name</a>, was more popular than its sister Alexandra for quite a while, but in recent years Alexandra has overtaken it once again. Alexis was a Top 20 <a href="https://nameberry.com/girls-names">girls’ name</a> from 1994-2010 but has experienced a decline in popularity in recent years, though now it's one of the <a href="https://nameberry.com/unisex-names">top unisex names</a>.

 Alexis zoomed to popularity following the introduction of the Dynasty character Alexis Carrington in the 1980s – which gave it a sleek image – and was quite popular throughout the 90s and 2000s, peaking at the third most popular <a href="https://nameberry.com/girls-names">girls’ name</a> in 1999.

 One of the few notable female pre-Carrington Alexises was 1940s actress Alexis Smith, who had some minimal impact on the name, which entered the list in 1943. A current bearer is Alexis Bledel, who played Rory on Gilmore Girls and currently stars on The Handmaid's Tale.

Alexiz

Aliks

Alisdair

With many British names invading the Yankee name pool, the sophisticated Alistair could and should be part of the next wave. It debuted in the US Top 1000 in 2016. You have a triple choice with this name--the British spell it Alistair or Alastair, while the Scots prefer Alasdair--but they're all suave Gaelic versions of Alexander. Adopted by the lowland Scots by the seventeenth century, the name didn't become popular outside Scotland and Ireland until the twentieth century.
 Both Andrew Lloyd-Weber and Rod Stewart chose the Alastair spelling for their sons' names.

Alistair

For people looking for an unusual variant of Alexandra, especially one that can be shortened to the ubiquitous Alex, Alistrina might be the name for you. 

Alistrina

Alix

A chic and sassy French choice, popular in France but likely to be confused with the more prosaic Alex in English-speaking countries. Although sometimes used in the US as a variant spelling of Alex, the French name Alix actually derives from a medieval French form of the name Alice or Adelaide. 

 Several members of European royal family have borne this name, including Alix of France; Alix, Duchess of Brittany; and Alix of Hesse, Empress consort of Russia. More recent are Alix d'Unienville, WWII spy; Alix Kilroy, one of the first British women to become a public servant; and engineer Alix Pryde.

Common as an independent name in Slovenia.

Alja

Allaster

Allex

A somewhat feminine-sounding name used for the unsavory character Alliser Thorne in HBO's Game of Thrones. Thorne was one of the highest-ranking officers of the Night's Watch in early seasons of the show, whom Jon Snow beheads for insubordination.

Alliser

Allister

Allix

A Spanish TV show made this one popular, along with single-named Mexican singer, Alondra. 

Alondra

Alyx

Dacha

Rather than confusing things with Elexis, we'd stick with the original Alexis version. 

Elexis

Eskender

Cool short form of Alexander, fresher than Alex and less trendy than Xander... for now.

Lex is still used mostly for boys, but like Alex, may cross over with the rising popularity of all long forms of the name.  Lexi is another, more feminine option.

Lexi is technically unisex though used much more often for girls in the US, where it ranks among the female Top 100.

Lexi

Lexi and Lexie, pixieish offshoots of the prolific Alex family, have come into their own. While it's on a gentle downslope, Lexi still ranks in the US Top 500.

Lexi and Lexie, pixie-ish offshoots of the prolific Alex family, have come into their own, remaining in the Top 1000 for more than 20 years now.
 Perhaps the most well-known appearance of this version in pop culture is Lexie Grey, half-sister of the Meredith Grey on Grey's Anatomy.

Lexie

Lexis

Lexis is a condensation of Alexis, or the expression of a wish to drive a Lexus. Go with the longer form.

Do you really want to name your baby after a car when there are so many other lex possibilities?

Lexus

Lexus, an automotive newcomer, has recently entered the Top 1000 -- more because of its association, we fear, with the status symbol car than its relation to the name Alexis. If you love this name, do your child a favor and make it Alexis or at least spell it Lexis.

Lyosha is a common nickname for Aleksei, the Russian form of Alexios.

Lyosha

Macallister as a first name is attracting new attention as the name chosen by Yahoo CEO Marissa Mayer and venture capitalist Zack Bogue for their young son.  Macallister is usually heard as a patronymic surname, meaning son of Alasdair or Alistair or any one of the spellings of the Scottish form of Alexander.  Like all other names of this type, Macallister leads to the cute short form Mac.

Macallister

Simple, friendly, distinctive name heard in several cultures.  The a ending may feel more feminine in the US than Ole, though both variations are acceptable in Scandinavia.

Oleksandr

Sasha in all its forms -- which include Sacha and Sascha -- is rising in popularity for both boys and girls. Its most prominent current bearer is Sacha Baron Cohen.

Sacha

Sander is a more conventional form of Zander or Xander, heard frequently on its own in Europe. It is now a Top 20 name in Norway, and is also popular in Denmark, Belgium and the Netherlands.


Sander

Sander would be an unconventional short form of Alexandra, variation of Sandra, or surname-name for girls. It was given to 41 baby boys in the US last year but no girls, but it certainly can be a gender-neutral choice.

More usually found as a surname, this is occasionally found as a first name in the north of Scotland.

Sanders

2012's Hurricane Sandy blew away whatever style currency Sandra retained from its 1960s Sandra Dee heyday. While in recent years it's been associated with Supreme Court Justice Sandra Day O'Connor, as a baby name Sandra is sinking beneath the waves.
 Actress Sandra Dee added to the popularity of this name during the mid-twentieth century.

Sandra

Lengthy, romantic Alessandro gives us the friendly and casual nickname Sandro, which works just as well as an independent name. It’s a popular international name, having ranked in Italy, France, Portugal, and Switzerland in recent years. 
 
Sandro Botticelli was an Italian Renaissance painter known for The Birth of Venus.

Sandro

Often given as an independent name in Greece. 

Sandros

A sweet Scottish short form of Alexander which is feeling newly appealing now the era of Sandra is far behind us. Sandy would also work well as a nickname for a child with pale red or dark blond hair.

Sandy

An alternative to Sasha, another common Russian nickname for Aleksandra.

Sanya

In Europe, this name is mostly male, but here it's more fashionable for girls.  It's a diminutive of Alexander.

Sascha

The energetic Russian nickname name Sasha is being used increasingly on its own, though since the prominence of the First Daughter, more than 90% of the American babies named Sasha are girls. Sacha Baron Cohen bears one of the alternate spellings.  


Sasha

Sasha, largely male in Russia--and also spelled Sascha and Sacha--is an energetic name that has really taken off for girls here, chosen by Jerry Seinfeld (using the alternate Sascha spelling) and other celebs. The Barack Obamas use it as the nickname for their younger daughter, whose proper name is Natasha. But in line with a trend toward softer-sounding boys' names like Asher and Joshua and thanks to Borat star Sacha Baron Cohen, Sasha also still has life as a boys' name too--it's popular in France for boys and girls almost equally.
 Another notable female bearer is 2006 Olympic silver medalist skater Sasha Cohen; Sasha Alexander, on the TV show Rizzoli & Isles, was born Suzana. And Sasha Fierce is the name of Beyonce's alter ego.
 Sasha was as high as 147 in 1988.

This cool, sauntering boy's name would fit in and stand out in a classroom today. Other similar diminutives more distinct than Xander or Zander include Saunders, Sander, and Sanders. 

Saunder

Preppier and less politically-charged than its source name, Sanders

Saunders

Shura is a unisex Russian nickname for Aleksandr or Aleksandra, themselves forms of Alexander.  Less known in the English=speaking world than Sasha, it's also more assertive -- probably because of that "sure" sound.

Shura

Shura is a unisex Russian nickname for Aleksandr or Aleksandra, themselves forms of Alexander.  Less known in the English-speaking world than Sasha, it's also more assertive — probably because of that "sure" sound.

Sikandar

With the plethora of Alexes around, Xan (and Xander) have emerged as hot new nicknames for Alexander. Xan also stands well on its own. It can be found--not surprisingly--in several computer games.

Cool, gender-neutral short form of Alexandra and company.

Abyss IR's list "Alex and Friends" of 107 great name ideas: Alasdair - Zandra!

Alex and Friends

This is a list of all the derivations of Alexander I could find on this site; there are so many.