Ansainiai (formerly Russian: Ганусевичи, Polish: Hanusewicze) is a village in Kėdainiai district municipality, in Kaunas County, in central Lithuania. According to the 2011 census, the village had a population of 14 people. It is located 0.5 kilometres (0.31 mi) from Labūnava, on the shore of the Labūnava Reservoir. There is a memorial for exiled local inhabitants during the Soviet era.

In the beginning of the 20th century, Ansainiai (Hanusewicze) was an okolica, a property of the Butkevičiai, Dautartai, Gineikiai, Hanusaučiai, Ivanaičiai, Jagėlavičiai, Jusevičiai, Kšešanavičiai, Stecevičiai, Uginskiai, Vencevičiai families.

Historical population

Year Pop. ±% p.a. 1923 120 —     1959 71 −1.45% 1970 57 −1.98% 1979 21 −10.50%	Year Pop. ±% p.a. 1989 25 +1.76% 2001 24 −0.34% 2011 14 −5.25%
Source: 1902, 1923, 1959 & 1970, 1979, 1989, 2001, 2011