Patrick Joseph Smullen (22 May 1977 – 15 September 2020), was an Irish jockey who won the Irish flat racing Champion Jockey title nine times. In a career running from 1992 to 2018 he rode 1,845 winners in Ireland and 47 in Britain. Amongst his biggest successes were riding Harzand to victories in the Epsom Derby and Irish Derby in 2016. He was stable jockey to Dermot Weld from 1999 until 2018.
He is also known as Patrick Smullen and Patrick J. Smullen.