1st Lieutenant August Gerard Deibel (11 September 1915 – 12 June 1951) was a Dutch pilot of the Royal Netherlands East Indies Army Air Force.

Deibel managed to fire twice at an A6M Zero, but was wounded by a 20 mm shell ten minutes later, forcing him to land.

Deibel, along with Lieutenant Gerard Bruggink and Officer Cadet Jan Scheffer, volunteered to join Captain Jacob van Helsdingen on his mission using the last three working Buffalo aircraft.

The four pilots took off from Andir airfield and proceeded to Lembang to provide air support for ground troops fighting in the city.

Van Helsdingen's squadron travelled 200 metres when they encountered a Japanese aircraft, which Deibel attacked before it escaped.

[4] One of Deibel's landing gears, damaged during the fight, broke off from his aircraft, causing it to crash in a ground loop.