3's a Crowd was a folk rock band originally from Vancouver, British Columbia, Canada, that existed from 1964 to 1969. The group had some moderate Canadian chart success, but is particularly notable for the wide range of Canadian musicians who passed through its ranks and would later establish successful music industry careers of their own, including Bruce Cockburn, Colleen Peterson, David Wiffen, Trevor Veitch, and Brent Titcomb. 3's A Crowd is also remembered for its association with Cass Elliott, who co-produced the group's sole album release.