Si 204
Prototypes each given a separate V number; Fifteen built by Siebel at Halle.

Si 204A
Pre-production A-0 and initial production A-1 passenger transports built at SNCAN (Société Nationale de Constructions Aéronautiques du Nord) in France.

Si 204D
A blind flying trainer developed by ČKD (BMM) in the Protectorate of Bohemia and Moravia; the first D-0 pre-series aircraft was delivered in January 1943 plus another 44. Production of the D-1 was carried out by Aero and BMM. D-3 aircraft were built with wooden wings and tailplanes in an effort to relieve pressure on the Aluminium supply

Aero C-3
Postwar production in Czechoslovakia for flying (C-3A) and crew training (C-3B).

Aero C-103
Civilian passenger transport variant.

Aero D-44
military transport variant.

SNCAC NC.701 Martinet
Military transport powered by two SNECMA 12S-00 inverted air-cooled V-12 engines.

SNCAC NC.702 Martinet
Passenger transport version with stepped windscreen.