| Official Name: | Beinaičiai |
| Settlement Type: | Village |
| Pushpin Map: | Kėdainiai District Municipality#Lithuania |
| Pushpin Map Caption: | Location in Lithuania |
| Subdivision Name: |  Lithuania |
| Subdivision Type1: | County |
| Subdivision Name1: | Kaunas County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Kėdainiai district municipality |
| Subdivision Type3: | Eldership |
| Subdivision Name3: | Pelėdnagiai Eldership |
| Population As Of: | 2011 |
| Population Total: | 267 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 55.2331°N 24.1111°W |
Beinaičiai (formerly Russian: Бейнайце, Polish: Benajcie, Bejnajcie) is a village in Kėdainiai district municipality, in Kaunas County, in central Lithuania. According to the 2011 census, the village had a population of 267 people. It is located from Kėdainiai, by the Šėta-Nociūnai road. There is a library and a former school.
There was Beinaičiai village and folwark in the beginning of the 20th century.
During the Soviet times, Beinaičiai was a kolkhoz center.