Tomanek is a surname. Notable people by that name include:
Rudolf Tomanek (1879–1941), Polish Roman Catholic priest, liturgist Joseph Tomanek (1889–1974), Czech-American artist Dick Tomanek (1931–2023), American former professional baseball player Jan Tománek (born 1978), Czech filmmaker Jan Tománek (born 1972), Czech rally co-driver David Tománek (born 1954), Czech-Swiss-American physicist