| Ionas Pyatrauskas | |
| Birth Date: | 1979 5, df=yes |
| Birth Place: | Minsk, Belarusian SSR |
| Position: | Defender |
| Youthyears1: | 1997–1999 |
| Youthclubs1: | Smena Minsk |
| Years1: | 1997–1998 |
| Years2: | 1999–2000 |
| Years3: | 1999 |
| Years4: | 2000 |
| Years5: | 2001–2005 |
| Years6: | 2006–2011 |
| Years7: | 2012 |
| Clubs1: | Smena-BATE Minsk |
| Clubs2: | BATE Borisov |
| Clubs3: | → Smena-BATE Minsk |
| Clubs4: | → RShVSM-Olympia Minsk |
| Clubs5: | Darida Minsk Raion |
| Clubs6: | Minsk |
| Clubs7: | Minsk-2 |
| Caps1: | 32 |
| Caps2: | 4 |
| Caps3: | 16 |
| Caps4: | 23 |
| Caps5: | 119 |
| Caps6: | 149 |
| Caps7: | 6 |
| Goals1: | 0 |
| Goals2: | 0 |
| Goals3: | 0 |
| Goals4: | 0 |
| Goals5: | 3 |
| Goals6: | 10 |
| Goals7: | 1 |
| Nationalyears1: | 2000 |
| Nationalteam1: | Belarus U21 |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Manageryears1: | 2012 |
| Managerclubs1: | Minsk-2 (assistant) |
| Manageryears2: | 2012–2015 |
Ionas Pyatrauskas (Belarusian: Іонас Пятраўскас; Russian: Ионас Пятраускас; born 18 May 1979) is a Belarusian professional football coach and former player of Lithuanian origin.