| Petros Xanthopoulos | |
| Birth Date: | 1959 9, df=yes |
| Birth Place: | Athens, Greece |
| Height: | 1.74 m |
| Years1: | 1978–1988 |
| Clubs1: | Olympiacos |
| Caps1: | 238 |
| Goals1: | 8 |
| Years2: | 1988–1990 |
| Caps2: | 37 |
| Goals2: | 5 |
| Years3: | 1990–1991 |
| Clubs3: | Panionios |
| Caps3: | 27 |
| Goals3: | 4 |
| Years4: | 1991–1994 |
| Clubs4: | Proodeftiki |
| Nationalyears1: | 1984–1987 |
| Nationalcaps1: | 21 |
| Nationalgoals1: | 0 |
| Manageryears1: | 1999 |
| Manageryears2: | 1999 |
| Manageryears3: | 1999–2000 |
| Manageryears4: | 2001–2002 |
| Manageryears5: | 2002–2003 |
| Managerclubs5: | Vyzas |
Petros Xanthopoulos (el|Πέτρος Ξανθόπουλος; born 2 September 1959) is a Greek retired professional footballer who played as a defender. During his club career, Xanthopoulos played for Olympiacos, Ethnikos Piraeus, Panionios and Proodeftiki. He also amassed 21 caps for the Greece national team.