Model Variants (Including Prototypes)
Nieuport 12 - Base Series Designation
Nieuport 12 A.2 - Primary reconnaissance model; Clerget 9Z or Le Rhone 9J engines of 110 horsepower.
Nieuport 12bis C.2 - Improved Model 12 with Clerget 9B engine of 130 horsepower.
Nieuport 13 - Prototype pair with different engines and lengthened wings.
Nieuport 20 - Outfitted with Le Rhone 9J engine of 110 horsepower for British Air Service (RFC) use.
Nieuport 80E.2 - Trainer with dual control scheme
Nieuport 81E.2 - Trainer with controls in rear cockpit only.
Army Type Ko 1 Trainer - Japanese trainer based on the 81E.2; some local production by Mitsubishi as well.
Sipowicz Model 1 - Polish experimental aircraft with revised wing structure.
Trainer Type 1 - Thai/Siam designation for 80E.2 trainer; sole aircraft procured.