Olmo is a surname. Notable people with the surname include:
Antonio Olmo (born 1954), Spanish footballer
Dani Olmo (born 1998), Spanish footballer
Giuseppe Olmo (1911–1992), Italian road bicycle racer
Harold Olmo (1909–2006), American viticulturist
Jesús Olmo (born 1985), Spanish footballer
Luis Olmo (born 1919), Puerto Rican retired baseball player who played in Major League Baseball
Miquel Olmo (born 1966), Spanish retired footballer
Walter Olmo, Italian musician and composer
