Vainiūnai (formerly Russian: Войнюны) 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 4.5 kilometres (2.8 mi) from Beinaičiai, by the Lankesa river and the Bubliai Reservoir. The road Šėta-Nociūnai goes nearby. There is a water tower and a farm.

Historical population

Year Pop. ±% p.a. 1902 51 —     1923 59 +0.70% 1959 43 −0.87% 1970 50 +1.38%	Year Pop. ±% p.a. 1979 27 −6.62% 1989 22 −2.03% 2001 23 +0.37% 2011 14 −4.84%
Source: 1902, 1923, 1959 & 1970, 1979, 1989, 2001, 2011