The Lioré et Olivier LeO 25 was a bomber aircraft produced in France in the late 1920s.

This was redesignated LeO 252 in 1929 after an engine change, and a second, generally similar machine was purchased by Romania.

This latter machine was equipped with supercharged engines[3] and was used to set a number of height-with-load records for seaplanes.

These surviving aircraft flew convoy escort and anti-submarine patrols in September 1939[2] before being used as tactical bombers against land targets during the Blitzkrieg,[3] suffering heavy losses.

[2] Fifty-three remained on strength with Vichy forces in August 1940, and these were used for secondary roles such as training and target towing until 1944.