| Alexandru Marin | |
| Birth Name: | Alexandru Marin Bucătaru |
| Birth Date: | 28 September 1957 |
| Birth Place: | Bucharest, Romania |
| Height: | 1.83 |
| Weight: | 76 |
| School: | public Alimentation |
| University: | management Turism/Artifex-Bucaharest |
| Spouse: | Nicoleta Marin |
| Children: | Alina Marin, Alexandru Marin, Andreea Marin |
| Occupation: | manager R.C.Grivita |
| Ru Position: | Fullback, Wing |
| Youthyears1: | 1971-1976 |
| Youthclubs1: | Clubul Sportiv Școlar |
| Years1: | 1976-1989 |
| Clubs1: | R.C. Grivița[1] |
| Repyears1: | 1977–1987 |
| Repcaps1: | 13 |
| Reppoints1: | 0 |
| Repsevensyears1: | |
| Coachyears1: | 1989-2005 |
| Coachyears2: | 2002-2006 |
| Coachyears3: | 2006- |
| Coachyears4: | 2007 |
| Coachyears5: | 2008 |
| Coachyears6: | 2012 |
| Coachteams1: | R.C. Grivița (youth team) |
| Coachteams2: | Romania U-19 |
| Coachteams3: | Romania B |
| Coachteams4: | Romania A |
| Coachteams5: | R.C. Grivița |
| Coachteams6: | Agronomia (women's sevens) |
Alexandru Marin (born 28 November 1957) in Bucharest, is a former Romanian rugby union football player and currently coach.He played as fullback and as wing.
In his career, Marin played for R.C. Grivița.
Marin was first capped in the match against Czechoslovakia, in Bucharest, on 9 April 1978. He also played the 1987 Rugby World Cup, with his only match in the tournament, against Zimbabwe, being also the last of his international career.