Chinaksen (Oromo: Aanaa cinaaksan) is one of the Districts of Ethiopias in the Oromia of Ethiopia.

The administrative center of this Aanaa is Chinaksen.

The 2007 national census reported a total population for this woreda of 87,063, of whom 44,925 were men and 42,138 were women; 12,261 or 14.08% of its population were urban dwellers.

The majority of the inhabitants said they were Muslim, (jaarso).

And Geri Koombewith 97.96% of the population reporting they observed this belief, while 1.84% of the population practised Ethiopian Orthodox Christianity.