Walter Grabmann (20 September 1905 – 20 August 1992) was a German general in the Luftwaffe during World War II.

Grabmann was credited with 7 aerial victories during the Spanish Civil War claimed in 137 combat missions.

From September 1938 to March 1939 Major Grabmann was Commander of Jagdgruppe 88 with the German Condor Legion in Spain, equipped with Heinkel He 51 biplanes and early versions of the Messerschmitt Bf 109.

(Zerstörer) Gruppe of Lehrgeschwader 1 (LG 1—1st Demonstration Wing) on 1 April 1939, succeeding Hauptmann Axel von Blomberg in this capacity.

Whilst providing cover for the Heinkel H 111Ps of II./Kampfgeschwader 1, LG 1 encountered Polish PZL P.11s of the Brygada Pościgowa over Warsaw on the evening of 1 September 1939.

Major Grabmann was wounded in this encounter when his Bf 110 was hit by fire from a Polish PZL P.11 fighter.

On 18 May 1940 Royal Air Force Hawker Hurricanes shot down 3 Bf 110Cs of ZG 76, including Grabmann, while flying a low-level attack on Douai airfield.