Squadron Leader Ernest Derek 'Dave' Glaser DFC AE (20 April 1921 – 2001) was a British Royal Air Force officer of the Battle of Britain, and later a notable test pilot.

He was educated at Lancing House and Bloxham School, before being accepted for flying training in the Royal Air Force Volunteer Reserve in April 1939.

65 Squadron RAF, where he flew Supermarine Spitfires alongside Jeffrey Quill and Franciszek Gruszka in the Battle of Britain.

234 that he was mistakenly shot down on 13 July 1940 by a Royal Navy warship off the English south coast.

[9] In early 1945 he was promoted Sqn Ldr and posted to command No 548 Squadron RAF, also at Darwin.