William Paul O'Connor (29 September 1910 – 18 September 1987) was an Australian politician. He was educated at Catholic schools before becoming a clerk, as well as an organiser of the Australian Workers' Union. Following the redistribution of 1949, O'Connor transferred to Martin, which he held until 1955. In that year, Martin was abolished, and O'Connor defeated sitting Labor MP Arthur Greenup for preselection for the seat of Dalley. O'Connor held Dalley until its abolition in 1969, at which time he retired. He died in 1987, 11 days before his 77th birthday.