Air Vice Marshal Ronald Graham, CB, CBE, DSO, DSC & Bar, DFC (19 July 1896 – 23 June 1967) was a First World War flying ace of the Royal Naval Air Service. Remaining in the Royal Air Force after that war, he rose to the rank of air vice marshal during the Second World War.
Graham was a medical student when the First World War began. In 1915, he joined the Royal Naval Division. In September, he pulled a lateral transfer into the Royal Naval Air Service as a flight sub-lieutenant. In 1916, he served at the Dover Seaplane Base. He then moved to Dunkirk, flying cover for the North Sea Fleet. During this time, he was forced into landing in the sea on two occasions. He became part of the Saint Pol Seaplane Defence Flight, which formed on 30 June 1917. Graham tallied his first two victories at this time, destroying a German seaplane on 19 June while piloting a Sopwith Baby, and another while piloting a Sopwith Pup on 12 August 1917; the latter was shared with Leonard Slatter.