Mark Ronald Cullinan (born 3 April 1957) is a South African former cricketer.
Cullinan was born at Johannesburg in April 1957.
He studied at university in South Africa, making his debut in first-class cricket for a combined South African Universities cricket team against Transvaal at Johannesburg in 1979.
He later before undertook his post-graduate studies in England at Worcester College, Oxford.
He played first-class cricket while studying in England for Oxford University, debuting for the university against Lancashire at Oxford in 1983.
He played first-class cricket for Oxford until 1984, making a total of fifteen appearances.
He scored a total of 210 runs in his fifteen matches for Oxford, with an average of 11.66 and a high score of 59.
In addition to playing first-class cricket while at Oxford, he also made two List A one-day appearances for the Combined Universities cricket team in the 1983 Benson & Hedges Cup.
He later became a diamond dealer and currently resides in Monaco.