Otto Guevara Guth (born October 13, 1960) is a politician in Costa Rica and founder of the Partido Movimiento Libertario (Libertarian Movement Party). He served in the Costa Rican legislature from 1998-2006. Guevara is currently the president of the Libertarian Movement Party and has been its candidate for president of Costa Rica in 2002, 2006, and 2010.

