| Official Name: | Šilainiai |
| 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: | 25 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 55.2419°N 24.0831°W |
Šilainiai (formerly ru|Шиланы, pl|Szyłajnie) is a village in Kėdainiai district municipality, in Kaunas County, in central Lithuania. According to the 2011 census, the village had a population of 25 people. It is located from Nociūnai, among the A8 highway, the Želksnys, the Raistas, the Bubliai and the Bubleliai forests, the Piltyna and the Gegužinė rivulets. There is a cemetery and a former quarry. The Šilainiai railway station is in Zutkiai village.