Julian is a common male given name in Britain, United States, Ireland, Germany, Poland, the Netherlands, France (as Julien), Spain, Latin America (as Julián) and elsewhere.

The name literally means, in Latin, "belonging to Julius", hence its use for the Julian calendar introduced by Julius Caesar. Some families have taken it as a female name, possibly due to the influence of the French feminine form, Julienne.

Some variations of the name are:

A female equivalent is Julie or July).

Notable people named Julien/Julian include:

Julian, trainee magician in Rick Riordan's "The Throne of Fire"

Reynaldo Hahn (August 9, 1874 – January 28, 1947) was a Venezuelan, naturalised French, composer, conductor, music critic and diarist. Best known as a composer of songs, he wrote in the French classical tradition of the mélodie. The fine craftsmanship, remarkable beauty, and originality of his works capture the insouciance of la belle époque.

Reynaldo Hahn was born in Caracas, Venezuela, the youngest of twelve children. Reynaldo's father Carlos was an affluent engineer, inventor, and businessman of German-Jewish extraction; his mother, Elena María de Echenagucia, was a Venezuelan of Spanish, (Basque) origin, and as most wealthy families descended from Spanish colonists in that country. The increasingly volatile political atmosphere in South America during the 1870s caused his father to retire and leave Venezuela.

Hahn's family moved to Paris when he was three years old. Although he showed interest in his native music of Caracas in his youth, France would "determine and define Hahn's musical identity in later life". The city and its cultural resources: the Paris Opéra, the Paris Opéra Ballet, the Opéra-Comique, in addition to the nexus of artists and writers, proved an ideal setting for the precocious Hahn.