Tammi Patterson (born 3 January 1990) is an Australian former professional tennis player.

Patterson has won one singles title and ten doubles titles on the ITF Circuit. On 21 February 2011, she reached a career-high singles ranking of world No. 289. On 23 October 2017, she peaked at No. 215 in the doubles rankings.

Patterson made her Grand Slam debut at the 2016 Australian Open as a wildcard entry. She lost against 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.^[1]

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Nov 2013	Bendigo International, Australia	50,000	Hard	Casey Dellacqua	3–6, 1–6
Win	1–1	Jun 2017	ITF Tokyo, Japan	25,000	Hard	Peangtarn Plipuech	6–3, 6–2

Result	W–L	Date	Tournament	Surface	Partner	Opponents	Score
Win	1–0	14 July 2008	ITF Frinton, United Kingdom	Grass	Emelyn Starr	Jade Curtis Elizabeth Thomas	6–3, 7–5
Win	2–0	20 June 2009	ITF Alcobaça, Portugal	Hard	Shannon Golds	Monica Gorny Jade Windley	3–6, 6–2, [10–4]
Loss	2–1	29 June 2009	ITF Cremona, Italy	Clay	Alenka Hubacek	Benedetta Davato Lisa Sabino	5–7, 3–6
Win	3–1	24 May 2010	ITF Velenje, Slovenia	Clay	Alenka Hubacek	Kateřina Kramperová Pavla Šmídová	6–1, 3–6, 6–4
Win	4–1	6 September 2010	ITF Cairns, Australia	Hard	Olivia Rogowska	Tyra Calderwood Noppawan Lertcheewakarn	6–3, 7–6(3)
Loss	4–2	14 September 2010	ITF Darwin, Australia	Hard	Alenka Hubacek	Kumiko Iijima Yurika Sema	4–6, 1–6
Win	5–2	15 November 2010	ITF Wellington, New Zealand	Hard	Tímea Babos	Jarmila Groth Jade Hopper	6–3, 6–2
Loss	5–3	27 August 2012	ITF Cairns, Australia	Hard	Tyra Calderwood	Monique Adamczak Victoria Larrière	2–6, 6–1, [5–10]
Loss	5–4	5 October 2013	ITF Perth, Australıa	Hard	Monique Adamczak	Yurika Sema Erika Sema	5–7, 1–6
Loss	5–5	13 October 2013	ITF Margaret River, Australıa	Hard	Monique Adamczak	Noppawan Lertcheewakarn Arina Rodionova	2–6, 6–3, [8–10]
Loss	5–6	5 April 2014	ITF Glen Iris, Australia	Clay	Ellen Perez	Jessica Moore Aleksandrina Naydenova	4–6, 2–6
Win	6–6	28 March 2015	ITF Mornington, Australia	Clay	Priscilla Hon	Mana Ayukawa Ayaka Okuno	6–4, 7–6(4)
Win	7–6	3 April 2015	ITF Melbourne, Australia	Clay	Priscilla Hon	Agata Barańska Sandra Zaniewska	2–6, 6–4, [12–10]
Win	8–6	2 October 2015	ITF Tweed Heads, Australia	Hard	Kimberly Birrell	Dalma Gálfi Priscilla Hon	6–7(3), 6–3, [10–8]
Win	9–6	19 February 2016	ITF Perth, Australia	Hard	Katarzyna Piter	Han Na-lae Jang Su-jeong	4–6, 6–2, [10–3]
Loss	9–7	24 February 2017	ITF Perth, Australia	Hard	Olivia Rogowska	Junri Namigata Riko Sawayanagi	6–4, 5–7, [6–10]
Win	10–7	20 May 2017	Kurume Cup, Japan	Carpet	Katy Dunne	Erina Hayashi Robu Kajitani	6–7(3), 6–2, [10–4]
Loss	10–8	27 May 2017	ITF Karuizawa, Japan	Carpet	Ayaka Okuno	Chisa Hosonuma Kanako Morisaki	5–7, 3–6
Loss	10–9	22 July 2017	Stockton Challenger, U.S.	Hard	Chanel Simmonds	Usue Maitane Arconada Sofia Kenin	6–4, 1–6, [5–10]
Loss	10–10	22 September 2017	ITF Penrith, Australia	Hard	Olivia Rogowska	Naiktha Bains Abigail Tere-Apisah	0–6, 5–7
Loss	10–11	1 July 2018	ITF Stuttgart, Germany	Clay	Anita Husarić	Irina Fetecau Aymet Uzcátegui	2–6, 6–3, [4–10]

• Tammi Patterson at the Women's Tennis Association
• Tammi Patterson at the International Tennis Federation
• Tammi Patterson at Tennis Australia