Meaning and name origin
Kieren \ki(e)-ren\ as a boy's name is of Irish and Gaelic origin, and the meaning of Kieren is "black". Kieren is a variant of Kieran (Irish, Gaelic): name of a saint (sixth century) who was admired for his generosity.
Kieren is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the boy name Kieren and its variant forms. Popular variation forms ranked in the Top 1000/100 are Kieran (#576), Kieron and Keiran. (2014 statistics).