Nemesio, from the Spanish name for Nemesis, is a Spanish given name. Notable people with the name include:
Nemesio Camacho (1869–1929), Colombian businessman and politician
Nemesio Canales (1878–1923), Puerto Rican writer and politician
Nemesio E. Caravana (born 1913), Filipino film director and actor
Nemesio Antúnez (1918–1993), Chilean painter
Nemesio Prudente (1927–2008), Filipino educator and activist
Nemesio Jiménez (born 1946), Spanish cyclist
Nemesio Miranda (born 1949), Filipino painter
Nemesio Domínguez Domínguez (born 1950), Mexican politician