Rogožarski Albatros Sremska Mitrovica The Zmaj Fizir FN (Serbian Cyrillic: Змај Физир ФН) was a plane designed for primary (initial) training of pilots in Yugoslavia before World War II.

Fizir FN had an exceptional low-speed stability, a desirable trait for a training aircraft, and was reliable and easy to maintain.

Rudolf Fizir's workshop lacked any mass production capacity, their specialty being design work and prototyping.

Before the war, the Navy Aviation ordered four hydro Fizir FN (Floatplane) with floats and with a more powerful 106 kW (142 hp) Walter Mars I engine.

The production of last 10 Fizir FN aircraft started in 1943 in Zmaj for the Croatian Air Force, but were not finished until the liberation, when they were handed over to the Aeronautical Federation of Yugoslavia.