Jokūbaičiai (formerly Russian: Якубайци, Polish: Jakubajcie) is a village in Kėdainiai district municipality, in Kaunas County, in central Lithuania. According to the 2011 census, the village has a population of 20 people. It is located 4 km from Gudžiūnai, by the Srautas river.

Jokūbačiai is mentioned as a royal village in the 18th century. During the Second World War Nazis killed 7 inhabitants of Jokūbačiai.

Historical population

Year Pop. ±% p.a. 1820 131 —     1902 258 +0.83% 1923 297 +0.67% 1959 238 −0.61% 1970 146 −4.35%	Year Pop. ±% p.a. 1979 65 −8.60% 1985 43 −6.65% 1989 29 −9.38% 2001 33 +1.08% 2011 20 −4.88%
Source: 1923, 1959 & 1970, 1979, 1989, 2001, 2011