| Sebastián Gualco | |
| Birth Date: | 26 April 1912 |
| Position: | Goalkeeper |
| Years1: | 1931–33 |
| Clubs1: | Platense |
| Years2: | 1934–36 |
| Clubs2: | San Lorenzo |
| Years3: | 1937 |
| Clubs3: | Chacarita Juniors |
| Years4: | 1938–40 |
| Clubs4: | San Lorenzo |
| Years5: | 1941–45 |
| Clubs5: | Ferro Carril Oeste |
| Years6: | 1936 |
| Clubs6: | Huracán |
| Nationalteam1: | Argentina |
| Nationalyears1: | 1935–1943 |
| Nationalcaps1: | 23 |
| Nationalgoals1: | 0 |
Sebastián Gualco (26 April 1912 6 November 1992) was an Argentine footballer. He played in 23 matches for the Argentina national football team from 1935 to 1943.[1] He was also part of Argentina's squad for the 1935 South American Championship.[2]