| Official Name: | Pajieslys |
| 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: | Krakės Eldership |
| Population As Of: | 2011 |
| Population Total: | 254 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 55.3439°N 23.6669°W |
Pajieslys (formerly ru|Поесли, pl|Pojeśle) is a village in Kėdainiai district municipality, in Kaunas County, in central Lithuania. According to the 2011 census, the village had a population of 254 people. It is located from Krakės, by the Jiesla rivulet, nearby its confluence with the Šušvė. There is a wooden Catholic church of St. Mary (built in 1913), a library, and a school. The Pajieslys Geomorphological Sanctuary is located nearby. Pajieslys hosts an ISKCON community.
The first church in Pajieslys had been built in 1857. Till the Soviet era there was the Pajieslys manor. Later the settlement was transformed into a kolkhoz and selsovet (1950–1988) center.