Roy Luke Dias (born 18 October 1952) is a former Sri Lankan cricketer who played Test matches and One Day Internationals for the national side.
He had a difficult start, being dismissed for a duck by Bob Willis as Sri Lanka fell to 11 for 2, but battled better in the second innings against England's spinners Derek Underwood and John Emburey.
Indeed, Sri Lanka's first Test matches were promising, but in the end it often ran away from them at crucial moments.
That enabled Sri Lanka to be on top, leading by 184 on first innings, but they could not bowl out Pakistan and had to settle for a draw.
At the 1983 Cricket World Cup, Sri Lanka only won one match, and Dias contributed with his only fifty of the series.
In the first Test, Dias made 4 and 0, yet Sri Lanka dominated thanks to centuries from Ranjan Madugalle and Arjuna Ranatunga – India, however, survived out the five days and the match ended in a draw.
Despite 78 from Kapil Dev, India were bowled out by 198, and Sri Lanka recorded their first Test victory.
He also oversaw the national under-19 team qualify for four editions of the Under-19 Cricket World Cup, recording multiple victories over ICC full members and finishing as plate champions in 2006.