Avižieniai is a town in Vilnius District Municipality, Lithuania, 1 kilometre west of the A2 Vilnius-Panevėžys highway. The village had a population of 2,125 as of 2011, which grew to 2,318 inhabitants in 2021 and is a centre of Avižieniai Eldership. During the Soviet period, a gardening farm was formed in Avižieniai, which territorially also covered what is now Fabijoniškės and Pašilaičiai microdistricts in Vilnius.