The SNCASE SE-3101 or Sud-Est SE-3101 was an early, experimental French helicopter with twin tail rotors.

The SE-3101 is an early, experimental helicopter, developed by the German aviation pioneer Henrich Focke.

These are mounted with their axes at 45° to the horizontal and with 90° between them, the drive shafts faired within a V-tail-like rear structure.

The aircraft has a fixed, wheeled tricycle undercarriage, assisted by a small tail skid.

[2] First flown on 15 June 1948,[3] development of the SE-3101 led to the Sud-Est SE-3110 and the single tail rotor SE.3120, though none of them entered production.