Theodorus ("Theo") Johannes Meijer (born February 18, 1965 in Amersfoort, Utrecht) is a retired judoka from the Netherlands, who represented his native country at two consecutive Summer Olympics (1988 and 1992).
He won the bronze medal in the men's half-heavyweight division (– 95 kg) in Barcelona, Spain (1992), alongside Dmitri Sergeyev who represented the Unified Team.