The CAMS 30E was a two-seat flying boat trainer built in France in the early 1920s. It was the first aircraft designed for CAMS by Raffaele Conflenti after he had been recruited by the company from his previous job at Società Idrovolanti Alta Italia (SIAI). It was a conventional design for the era featuring a two-bay equal-span unstaggered biplane wing cellule. The prototype was exhibited at the 1922 Salon de l'Aéronautique and evaluated the following year by the Aéronautique Maritime. The type's favourable performance led to an order of 22 machines for the French military and an export order of seven for Yugoslavia and four for Poland.