| Alberto Sainz | |
| Fullname: | Alberto Sainz |
| Height: | 1.62 m |
| Birth Date: | 13 December 1937 |
| Birth Place: | Buenos Aires, Argentina |
| Death Date: | [1] |
| Position: | Defender |
| Years1: | 1958–1961 |
| Years2: | 1962–1967 |
| Years3: | 1968–1969 |
| Clubs3: | San Lorenzo Mar de Plata |
| Nationalteam1: | Argentina |
Alberto "Nicha" Sainz (13 December 1937 – 16 January 2016)[2] was an Argentine association football player.
Sainz began his career in 1958 at Argentinos Juniors, where he played until 1961. In 1962 he moved to Club Atlético River Plate with whom he reached the final of the 1966 Copa Libertadores, where they lost to Uruguayan side C.A. Peñarol. He stayed at River Plate until 1967 and then moved to San Lorenzo from Mar de Plata in 1968 before retiring in 1969.
Sainz was member of the Argentina squad at the 1962 FIFA World Cup, where Argentina were eliminated in the group stage. He appeared in groups stage matches against Bulgaria and Hungary.