Facundo Díaz Acosta (born 15 December 2000) is an Argentine tennis player. Díaz Acosta has a career high ATP singles ranking of 212 achieved on 26 September 2022. He also has a career high ATP doubles ranking of 202 achieved on 3 October 2022. Díaz Acosta made his ATP main draw debut at the 2020 Argentina Open after receiving a wildcard for the singles and doubles main draws. In May 2022, Díaz Acosta won his first Challenger title on clay, at the 2022 Dove Men+Care Coquimbo in Chile.