Ralph Crookes (9 October 1846 – 15 February 1897) was an English first-class cricketer, who played one match for Yorkshire in 1879 against Kent, at Mote Park, Maidstone.
Crookes was born in Sheffield, Yorkshire, England. His only first-class outing brought him little personal glory. He scored a 2 not out at number 11 in Yorkshire's first innings, and then a duck when, bizarrely, he was promoted to open second time around. Although he bowled ten overs for just 14 runs in Kent's second innings, he did not take a wicket, and Kent won just seven runs as Yorkshire were bowled out for 114 chasing 121 to win.
He died aged 50, in Sheffield in February 1897.