The Morane-Saulnier MS-700 Pétrel () was a French four-seat cabin-monoplane designed and built by Morane-Saulnier, only three prototypes were built.
The MS-700 was a twin-engined, low-wing, cabin-monoplane with a retractable tricycle landing gear and powered by two Potez 4D-33 four-cylinder, inverted inline piston engines. The prototype, with French test registration F-WFDC, first flew on 8 January 1949. The aircraft was intended as a light liaison aircraft and the second prototype made a demonstration tour of Africa at the end of 1950. The second prototype was re-engined with two Mathis G8-20 engines and re-designated MS-701. On 3 January 1951 a third prototype first flew, it was a MS-703 with a longer fuselage for six-seats and two Salmson 8.AS.OO engines. After being used by the company for a number of years the first prototype was due to be modified in the late 1950s to the same standards as the MS-703 but with Potez engines but it was not converted and instead was withdrawn from use. Only the three prototypes were built and the type did not enter production.