Claire Foss is a retired businessperson from British Columbia, Canada, who ran for election to the Canadian House of Commons in the 1993, 1997, and 2004 elections.

In the 1993 Canadian election, Foss ran for the Canada Party in the riding of Okanagan-Shuswap, British Columbia. Foss placed last in a field of 9 candidates with 78 votes (0.16% of the total). He placed behind the candidate of the Natural Law Party of Canada (amongst others), who won 130 votes. He became leader of the Canada Party in 1994. Just before the 1997 election, the party merged into the Canadian Action Party.

In the 1997 Canadian election, Foss ran for the Canadian Action Party in Okanagan-Shuswap. Foss placed fifth in a field of 7 candidates with 802 votes (1.7% of the total). Foss trailed only the candidates of the mainsteam parties (Reform, Liberal, PC and NDP).

In the 2004 Canadian election, Foss ran again for CAP, but was less successful in North Okanagan-Shuswap: he placed 7th in a field of 8 candidates, with 235 votes (0.49% of the total).

The Canada Party and the Canadian Action Party base their platforms on monetary reform and nationalism.