Tomasa Ana Núñez Abreu (17 April 1951 – 30 December 1981) was a Cuban track and field athlete who competed in the javelin throw.
She was Cuba's first gold medallist in the javelin at the Pan American Games, gaining that title in 1971.
Her personal best of 54.64 m (179 ft 3 in) is a former Panamerican record.
She won four titles at regional level at the Central American and Caribbean Games in 1970 and 1974, as well as being the 1971 and 1973 champion at the Central American and Caribbean Championships in Athletics.