William Murdoch Ross Drinnan (28 May 1883 — 10 March 1948) was a Scottish first-class cricketer.
[1] Despite success at club level, it was not until 1928 that Drinnan represented Scotland in first-class cricket, making a single appearance against Ireland at Edinburgh.
[2] With his slow left-arm orthodox bowling, he took three wickets in the match; he dismissed Arthur Robinson in the Irish first innings with figures of 1 for 59, and in their second innings he dismissed Thomas MacDonald and Arthur Douglas with figures of 2 for 43.
In Scotland's second innings, he played a key role in helping them to secure a draw by remaining unbeaten on 24 and sharing in an unbeaten tenth wicket partnership of 44 with Thomas Watson.
Drinnan later died in the Wallacetown area of Ayr in March 1948.