The Britannia Yacht Club (BYC) is a private social club, yacht club, and tennis club based in Britannia, a neighborhood in Ottawa, Ontario, Canada. It was founded in 1887 by a group of cottagers.

Britannia is a group of neighbourhoods in Bay Ward in the west end of Ottawa, Ontario, Canada. It is located on the Ottawa River across from Aylmer, Quebec, adjacent to its namesake, Britannia Bay, north of Richmond Road, west of the Kichi Zibi Mikan and east of Boyce Avenue. The total population of this area was 6,692 as of the 2016 census. The area constituted a municipal ward from 1973 to 1994.