Ranmore Etholson John Martinesz (born 24 June 1967) is a Sri Lanka umpire and a former first-class cricketer.
His most important assignment was umpiring the Euro Asia Cup one-day final between India and Pakistan at Abu Dhabi in front of a crowd of 50,000.
Martinesz was forced to take up umpiring due to a persistent back injury which cut short his career as a cricketer.
He represented SSC, Negombo CC and Sebastianites in the Premier tournament before eventually retiring from the game in 1994.
[3] In January 2018, he was named as one of the seventeen on-field umpires for the 2018 Under-19 Cricket World Cup.