Globally, ليو (Leo 
, Liu , Lau , and others...) is a widespread principally masculine, but very infrequently female first name. The forename ليو is habitual in Hong Kong, where it is a common gender-neutral name, Macao, where it is a common dominantly masculine, but seldom female name, and Croatia, where it is a common male name (explore the name in all countries). Measured by absolute frequency, it is commonest in Philippines, the United States, and Indonesia. Predominantly, ليو is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Leo, Lew, Lau, Liu | Indonesia, Hong Kong, United States, Philippines, China |
| Léo | Germany, Brazil, Canada, United States, China |
| Reo | Indonesia, United States, Philippines, Malaysia, China |
| ليو | Saudi Arabia, Egypt, Sudan, Iraq, Algeria |
Ju, Lao, Lauv, Lauw, Lav, Leeuw, Leon, Leone, Leonid, Leonidas, Leonide, Leonīds, Leu, Lev, Leó, León, Liao, Liew, Lio, Liou, Liuni, Liyun, Liú, Liễu, Lleo, Loo, Low, Lowe, Lue, Lyon, Lyot, Lyw, Làu, Lâu, Léon, Léonidas, Léonide, Lưu, Ryū, Yoo, You, Yu, Λεωνίδας, Лайон, Лион, Лау, Лев, Лео, Леон, Леоне, Леонид,
ليو is also a prevalent name for the fictitious and mythical characters: Liu Kang , the Mortal Kombat character, Mortal Kombat 11; Leo McGarry , the character in The West Wing; Leo Wyatt , the fictional human, Charmed; Leo Fitz , the Agents of S.H.I.E.L.D. character and Lev , the fictional character from the video game The Last of Us Part II, and in many other works.