| Lefteris Velentzas | |
| Fullname: | Eleftherios Velentzas |
| Birth Date: | 1970 10, df=yes |
| Birth Place: | Athens, Greece |
| Position: | Midfielder |
| Currentclub: | Iraklis (assistant) |
| Youthyears1: | –1989 |
| Youthclubs1: | OF Nea Ionia |
| Years1: | 1989–1998 |
| Years2: | 1998–1999 |
| Years3: | 1999–2003 |
| Years4: | 2003 |
| Years5: | 2003–2005 |
| Years6: | 2005–2007 |
| Years7: | 2007–2008 |
| Years8: | 2008 |
| Years9: | 2008–2009 |
| Clubs1: | Apollon Smyrnis |
| Clubs2: | Iraklis |
| Clubs3: | Akratitos |
| Clubs4: | Egaleo |
| Clubs5: | Thrasyvoulos |
| Clubs6: | Agioi Anargyroi |
| Clubs7: | Ilioupoli |
| Clubs8: | Agia Paraskevi |
| Clubs9: | Nea Ionia |
| Caps1: | 182 |
| Caps2: | 27 |
| Caps3: | 35 |
| Caps4: | 12 |
| Goals1: | 25 |
| Goals2: | 4 |
| Goals3: | 13 |
| Goals4: | 1 |
| Nationalyears1: | 1995 |
| Nationalteam1: | Greece |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Manageryears1: | 2018 |
| Managerclubs1: | Apollon Smyrnis (caretaker) |
| Manageryears2: | 2018–2019 |
| Managerclubs2: | Apollon Smyrnis U20 |
| Manageryears3: | 2019 |
| Managerclubs3: | Apollon Smyrnis |
| Manageryears4: | 2022 |
| Managerclubs4: | Apollon Smyrnis (caretaker) |
| Manageryears5: | 2022 |
| Managerclubs5: | Apollon Smyrnis (assistant) |
| Manageryears6: | 2022–2023 |
| Managerclubs6: | Rouf U19 |
| Manageryears7: | 2022 |
| Managerclubs7: | Rouf (caretaker) |
| Manageryears8: | 2024 |
| Managerclubs8: | Iraklis (assistant) |
| Manageryears9: | 2024 |
| Managerclubs9: | Iraklis (caretaker) |
| Manageryears10: | 2024– |
| Managerclubs10: | Iraklis (assistant) |
Lefteris Velentzas (el|Λευτέρης Βελέντζας; born 10 October 1970) is a Greek professional football manager and former player.[1] [2] He is the current assistant coach of Super League Greece 2 club Iraklis.[3]