| Alejandro Semenewicz | |
| Full Name: | Alejandro Estanislao Semenewicz |
| Birth Date: | 1 June 1949 |
| Birth Place: | Buenos Aires, Argentina |
| Death Place: | Villa Domínico, Argentina |
| Position: | Defender, midfielder |
| Years1: | 1968–1969 |
| Clubs1: | Morón |
| Caps1: | 51 |
| Goals1: | 0 |
| Years2: | 1970–1976 |
| Clubs2: | Independiente |
| Caps2: | 220 |
| Goals2: | 4 |
| Years3: | 1977–1979 |
| Clubs3: | Atlético Nacional |
| Years4: | 1980 |
| Clubs4: | Cipolletti |
| Caps4: | 11 |
| Goals4: | 0 |
| Years5: | 1981–1982 |
| Clubs5: | Morón |
| Caps5: | 69 |
| Goals5: | 1 |
| Nationalyears1: | 1972 |
| Nationalteam1: | Argentina |
| Nationalcaps1: | 7 |
| Nationalgoals1: | 0 |
Alejandro Estanislao Semenewicz, (also spelled Siemianowicz, 1 June 1949 – 1 April 2024) was an Argentine professional footballer who played as a defender or midfielder.
Semenewicz was nicknamed "El Polaco".[1] He is considered to be one of the most decorated players in the history of Argentine side Independiente.[2]
Semenewicz mainly operated as a defender or midfielder and was known for his work ethic.[3]
Born in Argentina, Semenewicz was of Polish descent. His nickname was El polaco (The Pole).[4]
Semenewicz died after suffering a heart attack on 1 April 2024, at the age of 74.[5]