The Morane-Saulnier MS.315 is a primary training monoplane designed and built in France by Morane-Saulnier.
- Role: Primary trainer
- National origin: France
- Manufacturer: Morane-Saulnier
- First flight: 1932
- Number built: 356
- MS.315 – Production version with a 135hp (101kW) Salmson 9Nc radial engine, 350 built.
- MS.315/2 – Higher powered civil version, five built.
- MS.316 – Variant powered by a Regnier inverted Vee engine, one built.
- MS.317 -1960s conversions with a 220hp (164kW) Continental W-670K radial engine, 40 converted.
- French Air Force
- French Navy
- Peruvian Air Force
- Crew: 2
- Length: 7.60 m (24 ft 11¼ in)
- Wingspan: 12.00 m (39 ft 4½ in)
- Height: 2.80 m (9 ft 2¼ in)
- Wing area: 21.60 m2 (232.51 ft2)
- Empty weight: 548 kg (1208 lb)
- Gross weight: 860 kg (1896 lb)
- Powerplant: 1 × Salmson 9Nc radial engine, 101 kW (135 hp)
- Maximum speed: 170 km/h (106 mph)
- Service ceiling: 5500 m (18,045 ft)