| Official Name: | Mantviloniai |
| Settlement Type: | Village |
| Pushpin Map: | Kėdainiai District Municipality#Lithuania |
| Pushpin Map Label: | Location in Lithuania |
| Coordinates: | 55.2542°N 23.9314°W |
| Subdivision Name: |  Lithuania |
| Subdivision Type1: | County |
| Subdivision Name1: | Kaunas County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Kėdainiai district municipality |
| Subdivision Type3: | Eldership |
| Subdivision Name3: | Kėdainiai City Eldership |
| Population As Of: | 2011 |
| Population Total: | 19 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
Mantviloniai is a village in Kėdainiai district municipality, in Kaunas County, central Lithuania. It is located by the country road Aristava-Kėdainiai-Cinkiškiai. There is a meat factory located in the Mantviloniai village area. According to the 2011 census, the village has a population of 19 people.