The 2007 Zell am See mid-air collision was an aviation accident that occurred on 5 March 2007, at 10:53 a.m. CET (09:53 UTC), in which eight people died when an Aérospatiale SA 332 Super Puma helicopter, operated by Helog, collided with a private Diamond DV20 Katana light aircraft near Zell am See, Austria.

At the time of the accident, both aircraft were operating under visual flight rules.

The collision occurred at an altitude of about 5,090 feet (1,550 m), approximately 1 nautical mile (1.9 km) north-west of Zell am See Airport, as the helicopter flew over the airport's traffic pattern travelling north-north-eastwards.

The report stated that the main cause of the accident was the inability of both pilots to see the other aircraft in time to avoid the collision as a result of the reduced fields of vision allowed by the cockpit designs.

Another factor in the collision was the subtle limitations on visual perception relating in part to the proximity of the mountain slope not far below both aircraft, requiring both pilots' attention to maintain suitable terrain clearance.