The Dōshi Seisha (lit. Fellow Thinkers' Association) was a political party in Japan.
The party was established in December 1892 by 14 MPs who had left the Liberal Party after its leader, Hoshi Tōro had been impeached for corruption. It was initially named the Dōshi Club (同盟倶楽部), but was renamed Dōshi Seisha after becoming a political association.
It won 18 seats in the March 1894 elections. In May that year it merged with Dōmei Seisha to form Rikken Kakushintō.