Jabarkan Varian dari Aero L-29 Delfin

Selama beberapa taun, beberapa versi lain juga dibuat, yaitu:

L 39C: Standard aircraft for basic and advanced training

L 39V: Single-seat aircraft for target towing. Used by Czech and East German Air Forces. Only eight built.

L 39ZO: Training and multipurpose light attack aircraft with underfuselage gun pod and four hardpoints und reinforced wing. first flown on 25. August 1975.

L 39ZA: Trainer and light attack aircraft with impoved avionics. First flown in September 1976. This version remains on offer.

L 39ZA/ART: Version for Thailand with avionics supplied by Elbit of Israel.