Tammi Patterson (born 3 January 1990) is an Australian former professional tennis player.
Patterson won one singles title and 10 doubles titles on the ITF Circuit. On 21 February 2011, she reached a career-high singles ranking of 289. On 23 October 2017, she peaked at 215 in the doubles rankings.
Patterson made her Grand Slam debut at the 2016 Australian Open as a wildcard entry. She lost to former world No. 1 Ana Ivanovic in the first round in straight sets, winning just five games and not being able to force a break point.