'Ozren' (iii) was a Croat operation against the partisan forces of Josip Broz Tito in the Sunja area of the puppet state of Croatia in Axis-occupied Yugoslavia (15/17 April 1943).

The operation’s objective was the destruction of the unspecified partisan concentrations in the area of Doboj and Teslić in eastern Bosnia, and the Croat unit involved was Pukovnik Stjepan Mifek’s 8^th Regiment. This was a very small, local operation which met with only limited success: the Croats lost three men killed and 11 wounded, while the partisans lost 32 counted dead and an estimated 29 more, 28 wounded and 96 captured, together with very small quantities of matériel.