Sir Oliver Graham Sutton CBE FRS (4 February 1903 – 26 May 1977) was a Welsh mathematician and meteorologist.
He was born at Cwmcarn, Monmouthshire, and educated at Pontywaun Grammar School, the University College of Wales, Aberystwyth, and at Jesus College, Oxford (which elected him to an Honorary Fellowship in 1958).
He was Professor of Mathematics at the Royal Military College of Science, Shrivenham, Wiltshire. He was elected a Fellow of the Royal Society in March 1949. He was awarded CBE in 1950.
He was Director-General of the Meteorological Office from 1953 to 1965 and president of the Royal Meteorological Society from 1953 to 1955, being awarded their Symons Gold Medal for 1959. He was knighted in 1955.
In 1958 Sutton was invited to co-deliver the Royal Institution Christmas Lecture.
He was Vice-President of the University College of Wales, Aberystwyth from 1967.
In 1968 he was awarded the prestigious International Meteorological Organization Prize from the World Meteorological Organization.