Jan Lehane O'Neill (born 9 July 1941) is a former Australian female tennis player.At the Australian Championships, O'Neill reached the singles final four consecutive years (1960–1963) but lost to Margaret Court each time. O'Neill had a similar experience in women's doubles, reaching the final twice (in 1961 with Mary Bevis Hawton and 1963 with Lesley Turner Bowrey) but losing each time to a team that included Court (with Mary Carter Reitano in 1961 and Robyn Ebbern in 1963).