The Lioré et Olivier LeO 20 was a French night-bomber aircraft built by Lioré et Olivier.

It won the 1926 French ministry competition for a new night-bomber, and received an order for 50 aircraft.

The first were delivered at the end of 1926 and flight tested at Villacoublay in 1927.

A total of 311 aircraft were delivered to the French air arm, ending in December 1932.

[2] Data from Jane's all the World's Aircraft 1928,[4][1]General characteristics Performance Armament