| Mathias Hain | |
| Fullname: | Mathias Hain |
| Birth Date: | 31 December 1972 |
| Birth Place: | Goslar, West Germany |
| Height: | 1.88 m |
| Position: | Goalkeeper |
| Youthyears1: | 1978–1988 |
| Youthclubs1: | SV Schladen |
| Youthyears2: | 1988–1989 |
| Youthclubs2: | FG Vienenburg |
| Years1: | 1989–1999 |
| Clubs1: | Eintracht Braunschweig |
| Caps1: | 179 |
| Goals1: | 1 |
| Years2: | 1999–2000 |
| Clubs2: | Greuther Fürth |
| Caps2: | 22 |
| Goals2: | 0 |
| Years3: | 2000–2008 |
| Clubs3: | Arminia Bielefeld |
| Caps3: | 243 |
| Goals3: | 0 |
| Years4: | 2008–2011 |
| Clubs4: | FC St. Pauli |
| Caps4: | 69 |
| Goals4: | 0 |
| Totalcaps: | 513 |
| Totalgoals: | 1 |
| Manageryears1: | 2011–2015 |
| Managerclubs1: | FC St. Pauli (goalkeeper coach) |
Mathias Hain (born 31 December 1972) is a German former professional footballer who played as a goalkeeper.[1] He is the brother of Uwe Hain, himself a former goalkeeper. Hain was known for his great shot stopping ability and, during his time at Arminia Bielefeld, captained the side until he left in 2008. He currently works as a goalkeeping coach for his final club as a player - Hamburg based FC St. Pauli.