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See also: brennan



From Irish Ó Braonáin (descendant of Braonán), a diminutive of braon (moisture, drop). Alternatively, from Irish Ó Branáin (descendant of Branán), a diminutive of bran (raven).

Proper noun[edit]

Brennan (plural Brennans)

  1. A surname, from Irish of Irish origin.
  2. A male given name transferred from the surname, of mostly American usage.
  3. A male given name, variant of Brendan.


  • According to the 2010 United States Census, Brennan is the 701st most common surname in the United States, belonging to 49,238 individuals. Brennan is most common among White (94.6%) individuals.

Further reading[edit]