| Official Name: | Petrašiūnai |
| Settlement Type: | Village |
| Pushpin Map: | Lithuania |
| Pushpin Map Caption: | Location in Lithuania |
| Subdivision Name: |  Lithuania |
| Subdivision Type1: | County |
| Subdivision Name1: | Kaunas County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Jonava district municipality |
| Subdivision Type3: | Eldership |
| Subdivision Name3: | Bukonys eldership |
| Population As Of: | 2011 |
| Population Total: | 102 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 55.2056°N 24.325°W |
Petrašiūnai is a village in Jonava district municipality, in Kaunas County, central Lithuania. According to the 2011 census, the town has a population of 102.