The Ottawa Valley Curling Association (OVCA) is a regional association for the sport of curling in the Ottawa valley region of Eastern Ontario and Western Quebec. The OVCA was founded in 1957. It operates a number of bonspiels, most notably the which occurs every March. It is one of the largest bonspiels in the world, and has been running annually since 1956. In 2010, the open division had 137 teams.