The Farman HF-20 and its derivatives were a family of reconnaissance aircraft produced in France shortly before and during WWI. The plane was seriously underpowered, and a variety of engines were trialled in the hope of correcting this. The problem was eventually solved only when an engine of twice the power of the original powerplant was fitted to the HF.27 variant, by which time the aircraft was already obsolete.

Reconnaissance pusher biplane type introduced in 1913.

This aircraft was used between 1912 and 1914 to study conditions in the Sahara desert. It is part of the Musee de l'Air et de l'Espace