| Hayrettin Demirbaş | |
| Fullname: | Hayrettin Demirbaş |
| Birth Date: | 26 June 1963 |
| Birth Place: | Istanbul, Turkey |
| Position: | Goalkeeper |
| Youthclubs1: | Küçükköyspor |
| Youthyears2: | 1977–1981 |
| Youthclubs2: | Altay |
| Years1: | 1980–1986 |
| Clubs1: | Altay |
| Caps1: | 24 |
| Goals1: | 0 |
| Years2: | 1985–1986 |
| Clubs2: | → Afyonspor (loan) |
| Caps2: | 25 |
| Goals2: | 0 |
| Years3: | 1986–1996 |
| Clubs3: | Galatasaray |
| Caps3: | 149 |
| Goals3: | 0 |
| Years4: | 1994–1995 |
| Clubs4: | → Vanspor (loan) |
| Caps4: | 12 |
| Goals4: | 0 |
| Years5: | 1997–2000 |
| Clubs5: | Zeytinburnuspor |
| Caps5: | 16 |
| Goals5: | 0 |
| Years6: | 2000 |
| Clubs6: | Ağrıspor |
| Caps6: | 6 |
| Goals6: | 0 |
| Years7: | 2010 |
| Clubs7: | 51 Niğdespor |
| Caps7: | 2 |
| Goals7: | 0 |
| Totalcaps: | 234 |
| Totalgoals: | 0 |
| Nationalyears1: | 1991–1994 |
| Nationalteam1: | Turkey |
| Nationalcaps1: | 18 |
| Nationalgoals1: | 0 |
| Manageryears1: | 2002–2003 |
| Managerclubs1: | Bucaspor (goalkeeping coach) |
| Manageryears2: | 2003 |
| Managerclubs2: | Bucaspor |
| Manageryears3: | 2006 |
| Managerclubs3: | Erzurumspor |
| Manageryears4: | 2006 |
| Managerclubs4: | Nazilli Belediyespor |
| Manageryears5: | 2008 |
| Managerclubs5: | Belediye Bingölspor |
| Manageryears6: | 2010–2011 |
| Managerclubs6: | Atilla Spor Izmir |
| Manageryears7: | 2011–2012 |
| Managerclubs7: | Manisaspor (goalkeeping coach) |
| Manageryears8: | 2013–2014 |
| Managerclubs8: | Manisaspor (goalkeeping coach) |
| Manageryears9: | 2014–2015 |
| Managerclubs9: | Balıkesirspor (goalkeeping coach) |
| Manageryears10: | 2016 |
| Managerclubs10: | Manisaspor (goalkeeping coach) |
| Manageryears11: | 2016–2017 |
| Managerclubs11: | Bandırmaspor (goalkeeping coach) |
Hayrettin Demirbaş (born 26 June 1963) is a Turkish former international footballer and current coach. He spent majority of his career playing at Galatasaray.
In 2010, Demirbaş made a comeback at the age of 47, after 12 years of retirement and signed for 51 Niğdespor at Turkish Regional Amateur League.[1] He made his debut for 51 Niğdespor on 22 February 2010 when 51 Niğdespor beat Polis Meslek Yüksekokulu by 7 - 1.[2]
He retired once again on 2010 March following unsuccessful 3. Lig promotion attempt of 51 Niğdespor, as club was beaten by Niğde Belediyspor on a 1 - 0 at playoffs.[3]