The LIBIS KB-6 Matajur was a 1950s Slovenian two-seat light monoplane designed and produced by LIBIS aircraft during Yugoslavian period.

The aircraft design office of LIBIS brought together teachers and students of the Ljubljana technical high school.

The design office designed the KB-6 Matajur which was a two-seat light trainer and tourer that first flew on 4 June 1952.

The KB-6 was a cantilever low-wing monoplane with fixed tailwheel landing gear and an enclosed cockpit with side-by-side seating and dual controls.

Data from Jane's All The World's Aircraft 1953-54[2]General characteristics Performance