Quick answer
Kelly is a boy/girl name.
Pronunciation: English /ˈkɛl.i/.
Meaning and history
Anglicized form of the Irish given name Ceallach or the surname derived from it Ó Ceallaigh. As a surname, it has been borne by actor and dancer Gene Kelly (1912-1996) and actress and princess Grace Kelly (1929-1982). As a given name it was mostly masculine before 1940, but it rose in popularity as a name for girls during the 40s and 50s, probably due both to Grace Kelly (who married Prince Rainier III of Monaco in 1956) and a female character on the 1957 television series Bachelor Father. By the end of the 1970s it was on the decline.
Notes and context
Usage: irish, english