José Romão Martenetz (born Roman Martynets; Ukrainian: ????? (?????) ?????????) (7 February 1903, Lviv, present Ukraine – 23 February 1989, Curitiba, Brazil) was a bishop of the Ukrainian Catholic Eparchy of São João Batista em Curitiba (1962–1978) and a monk of the Order of Saint Basil the Great.