Aynajik (Persian: عين جيک, also Romanized as ‘Aynajīk, Ainajek, ‘Eynajīk, ‘Eynejīk, and Eynjik; also known as Aynadzhek and Enjag) is a village in Karasf Rural District, in the Central District of Khodabandeh County, Zanjan Province, Iran. At the 2006 census, its population was 818, in 192 families.