Barney O'Shaughnessy (28 February 1912 – 27 May 2007) was an Australian cricketer who played a single first-class match for Western Australia. Born in the isolated Mid-West town of Wiluna, Western Australia, where his family managed a hotel, O'Shaughnessy was sent to Perth for schooling, attending Christian Brothers' College as a boarder. Playing as a fast bowler and attacking batsman, he played cricket for the school in the Darlot Cup, and also captained the school's football team in 1931, his final year at the school. In one match, against Scotch College in November 1931, O'Shaughnessy scored a century, 100 runs exactly, from 65 minutes of batting, including seven sixes and nine fours.