| Héctor Demarco | |
| Birth Date: | 31 May 1931 |
| Position: | Forward |
| Nationalteam1: | Uruguay |
| Nationalyears1: | 1955–1959 |
| Nationalcaps1: | 14 |
| Nationalgoals1: | 3 |
Héctor Demarco (31 May 1936 - 21 June 2010) was a Uruguayan footballer. He played in 14 matches for the Uruguay national football team from 1955 to 1959.[1] He was also part of Uruguay's squad for the 1956 South American Championship.[2]