Božidar Adžija (Serbian Cyrillic: Божидар Аџија; 24 December 1890 – 9 July 1941) was a Yugoslav communist politician and publicist.
A native of Drniš in the Kingdom of Dalmatia (present-day Croatia), of Croat and Serb descent, Adžija participated in World War I as a soldier in the Austro-Hungarian Army.
[1] After the war and collapse of Austria-Hungary, in 1919 he became labour policy commissioner in the local Zagreb government.
His views gradually shifted towards Communism, and in 1934 he joined the Communist Party of Yugoslavia.
The Ustaša authorities had Adžija shot — together with Zvonimir Richtmann, Otokar Keršovani, and Ognjen Prica — as a retaliation for Partisan activity.