Tom Rees (18 May 1895 – 17 September 1916) was a British Army officer who served in the Royal Flying Corps during the First World War.

Joining the military in early 1915, Rees was raised to the rank of lieutenant before his 21st birthday, and eventually reached captain on the day of his death.

He volunteered to join the Royal Flying Corps in November 1915 and returned to the United Kingdom for aircrew training.

He had earned early promotion to lieutenant as a result of his "academic abilities" prior to his transfer and this was later followed by advancement to captain, which was promulgated on 17 September 1916.

[5] On Sunday, 17 September 1916, Rees was the observer in a two-man F. E. 2b, serial number 7018, piloted by Second Lieutenant Lionel Morris.

“I gave a short series of shots with my machine gun.” In the dogfight, von Richthofen said he "had gone so close that I was afraid I might dash into the Englishman.

Suddenly, I nearly yelled with joy for the propeller of the enemy machine had stopped turning.”[21] For von Richthofen, this was the first of the 80 confirmed aerial combat victories with which he was credited before his death in April 1918.

[16] His account of the event noted that the pilot was probably experienced, as he appeared conscious of the danger he was in and did his best to escape, as von Richthofen manoeuvred his new Albatros D.II serial number 491/16, into position to attack.

Von Richthofen recounted that at the time he was not sure whether the F.E.2b would fall, until he was able to close up behind it during a moment of nonevasive flying, taking advantage of the F.E.2b's vulnerability underneath.

Von Richthofen followed the F. E. 2b down and saw the dead observer and badly wounded pilot (who died later the same day), then flew back to his squadron's base at Bertincourt.

[31] After his death, Rees was nominated for a Mention in Despatches, for his "excellent work as an observer" by his commanding officer, who cited that he had flown many sorties between July and September 1916, before being posted as missing in action.