Dinneen (Irish: Ó Duinnín for men, Ní Dhuinnín for women) is a surname of Irish origin. The family was famous for having supplied generations of court poets to their overlords in the ancient kingdom of Corcu Loígde.
List of people with the surname Dinneen
- Bill Dinneen, baseball player
- John Dinneen, politician
- Joseph F. Dinneen, writer
- Michael Dinneen, mathematician and computer scientist
- Patrick S. Dinneen, lexicographer and historian