Cincinnati Masters (sponsorluk nedenleriyle Western & Southern Open olarak markalanmıştır), Ohio, Cincinnati yakınlarındaki Mason'da düzenlenen yıllık bir açık hava sert kort tenis etkinliğidir. Etkinlik 18 Eylül 1899'da başladı ve Amerika Birleşik Devletleri'ndeki orijinal şehrinde oynanan en eski tenis turnuvasıdır. Turnuva, erkekler bölümü bir olduğu için ABD Açık'tan sonra ABD'deki en büyük ikinci yaz tenis etkinliğidir. ATP Tour'daki dokuz elit Masters 1000 turnuvasından ve onun bayanlar etkinliğinden WTA Tour'daki beş Premier 5 etkinliğinden biri.

Tek Kadınlar

Sene	Şampiyon	Finalist	Setler
2023
2022	Caroline Garcia (Fransa)	Petra Kvitová (Çek Cumhuriyeti)	6–2, 6–4.
2021	Ashleigh Barty	Jil Teichmann	6–3, 6–1
2020	Victoria Azarenka	Naomi Osaka	via walkover.
2019	Madison Keys	Svetlena Kuznetsova	7–5, 7–6(7–5)
2018	Kiki Bertens	Simona Halep	2–6, 7–6 (8–6) , 6–2
2017	Garbiñe Muguruza	Simona Halep	6–1, 6–0
2016	Karolína Plíšková	Angelique Kerber	6–3, 6–1
2015	Serena Williams   (2)	Simona Halep	6–3, 7–6 (7–5)
2014	Serena Williams	Ana Ivanovic	6–4, 6–1
2013	Victoria Azarenka	Serena Williams	2–6, 6–2, 7–6 (8–6)
2012	Li Na	Angelique Kerber	1–6, 6–3, 6–1
2011	Maria Sharapova	Jelena Janković	4–6, 7–6 (7–3) , 6–3
2010	Kim Clijsters	Maria Sharapova	2–6, 7–6 (7–4) , 6–2
2009	Jelena Janković	Dinara Safina	6–4, 6–2
↑  Premier 5 tournament  ↑
2008	Nadia Petrova	Nathalie Dechy	6–2, 6–1
2007	Anna Chakvetadze	Akiko Morigami	6–1, 6–3
2006	Vera Zvonareva	Katarina Srebotnik	6–2, 6–4
2005	Patty Schnyder	Akiko Morigami	6–4, 6–0
2004	Lindsay Davenport	Vera Zvonareva	6–3, 6–2
1989–2003		Yapılmadı.
1988	Barbara Potter	Helen Kelesi	6–2, 6–2
1974–1987		Yapılmadı.
1973	Evonne Goolagong	Chris Evert	6–2, 7–5
1972	Margaret Court	Evonne Goolagong	3–6, 6–2, 7–5
1971	Virginia Wade	Linda Tuero	6–3, 6–3
1970	Rosemary Casals	Nancy Richey Gunter	6–3, 6–3
1969	Lesley Turner Bowrey	Gail Chanfreau	1–6, 7–5, 10–10, ret.
1968	Linda Tuero	Tory Fretz	6–1, 6–2
1967	Jane Bartkowicz   (2)	Patsy Rippy	6–4, 6–1
1966	Jane Bartkowicz	Peachy Kellmeyer	6–3, 6–3
1965	Stephanie DeFina   (2)	Roberta Alison	10–8, 5–7, 6–4
1964	Jean Danilovich	Alice Tym	6–1, 6–2
1963	Stephanie DeFina	Jane Bartkowicz	7–5, 6–2
1962	Julie Heldman	Roberta Alison	6–4, 6–4
1961	Peachy Kellmeyer	Carole Caldwell Graebner	3–6, 12–10, 7–5
1960	Carol Hanks	Farel Footman	6–2, 4–6, 6–3
1959	Donna Floyd	Carol Hanks	5–7, 6–2, 6–4
1958	Gwyn Thomas	Martha Hernandez	6–1, 6–2
1957	Lois Felix   (2)	Pat Naud	7–5, 2–6, 7–5
1956	Yola Ramírez Ochoa	Mary Ann Mitchell	7–5, 6–1
1955	Mimi Arnold	Barbara Breit	6–4, 6–3
1954	Lois Felix	Ethel Norton	6–1, 6–3
1953	Thelma Coyne Long	Anita Kanter	7–5, 6–2
1952	Anita Kanter	Doris Popple	6–0, 6–1
1951	Pat Canning Todd	Magda Rurac	6–3, 6–4
1950	Beverly Baker Fleitz	Magda Rurac	5–7, 6–3, 9–7
1949	Magda Rurac	Beverly Baker Fleitz	6–4, 2–6, 6–0
1948	Dorothy Head Knode	Mercedes Madden Lewis	6–4, 6–4
1947	Betty Rosenquest	Betty Hulbert James	9–7, 6–2
1946	Virginia Kovacs	Shirley Fry Irvin	6–4, 6–1
1945	Pauline Betz   (3)	Dorothy Bundy Cheney	6–2, 6–0
1944	Dorothy Bundy Cheney	Pauline Betz Addie	7–5, 6–4
1943	Pauline Betz Addie   (2)	Catherine Wolf	6–0, 6–2
1942	Catherine Wolf   (2)	Monica Nolan	6–4, 6–1
1941	Pauline Betz Addie	Mary Arnold	6–4, 6–3
1940	Alice Marble	Gracyn Wheeler	6–3, 6–4
1939	Catherine Wolf	Virginia Hollinger	6–2, 6–3
1938	Virginia Hollinger   (2)	Margaret Jessee	8–6, 1–6, 6–0
1937	Virginia Hollinger	Monica Nolan	6–3, 6–2
1936	Lila Porter	Virginia Hollinger	6–4, 6–3
1935		Yapılmadı.
1934	Gracyn Wheeler	Esther Bartosh	default
1933	Muriel Adams	Helen Fulton	6–4, 6–4
1932	Dorothy Weisel Hack	Clara Louise Zinke	6–1, 6–0
1931	Clara Louise Zinke   (5)	Ruth Riese	6–1, 6–1
1930	Clara Louise Zinke   (4)	Ruth Riese	6–2, 6–4
1929	Clara Louise Zinke   (3)	Ruth Riese	6–2, 6–3
1928	Marjorie Gladman	Clara Louise Zinke	6–4, 6–4
1927	Clara Louise Zinke   (2)	Marian Leighton	6–4, 4–6, 4–1, ret.
1926	Clara Louise Zinke	Olga Strashun Weil	6–2, 6–2
1925	Marian Leighton	Clara Louise Zinke	6–3, 6–2
1924	Olga Strashun	Clara Louise Zinke	6–4, 6–2
1923	Ruth Sanders Cordes   (5)	Clara Louise Zinke	6–0, 7–5
1922	Ruth Sanders Cordes   (4)	Olga Strashun	6–3, 6–4
1921		Yapılmadı.
1920	Ruth Sanders Cordes   (3)	Ruth King	6–1, 6–0
1919		Yapılmadı.
1918		Yapılmadı.
1917	Katharine Brown	Mrs. Willis Adams	7–5, 0–6, 6–4
1916	Martha Guthrie	Marguerite Davis	6–2, 2–6, 6–1
1915	Molla Bjurstedt	Ruth Sanders Cordes	6–0, 6–4
1914	Ruth Sanders Cordes   (2)	Katharine Brown	7–5, 5–7, 6–2
1913	Ruth Sanders Cordes	Marjorie Dodd	6–2, 6–3
1912	Marjorie Dodd   (2)	May Sutton	default
1911	Marjorie Dodd	Helen McLaughlin	6–0, 6–2
1910	Miriam Steever	Rhea Fairbairn	4–6, 8–6, 6–0
1909	Edith Hannam	Martha Kinsey	6–3, 6–1
1908	Martha Kinsey	Marjorie Dodd	4–6, 8–6, 6–2
1907	May Sutton   (3)	Martha Kinsey	6–1, 6–1
1906	May Sutton   (2)	Florence Sutton	7–5, 6–2
1905	May Sutton	Myrtle McAteer	6–0, 6–0
1904	Myrtle McAteer   (3)	Winona Closterman	7–5, 6–3
1903	Winona Closterman   (2)	Myrtle McAteer	6–1, 5–7, 6–4
1902	Maud Banks	Winona Closterman	6–2, 6–1
1901	Winona Closterman	Juliette Atkinson	6–2, 8–6, 6–1
1900	Myrtle McAteer   (2)	Maud Banks	6–4, 6–8, 6–2, 6–3
1899	Myrtle McAteer	Juliette Atkinson	7–5, 6–1, 4–6, 8–6

Çift Kadınlar

Sene	Şampiyon	Finalist	Setler
2022	Lyudmyla Kichenok (Ukrayna) Jeļena Ostapenko (Letonya)	Nicole Melichar-Martinez (ABD) Ellen Perez (Avustralya)	7–6(7–5), 6–3
2021	Samantha Stosur Zhang Shuai	Gabriela Dabrowski Luisa Stefani	7–5, 6–3
2020	Květa Peschke Demi Schuurs	Nicole Melichar Xu Yifan	6–1, 4–6, [10–4]
2019	Lucie Hradecká Andreja Klepač	Anna-Lena Grönefeld Demi Schuurs	6–4, 6–1
2018	Lucie Hradecká   Ekaterina Makarova	Elise Mertens     Demi Schuurs	6–2, 7–5
2017	Chan Yung-jan   (2)	Hsieh Su-wei	4–6, 6–4, [10–7]
	Martina Hingis	Monica Niculescu
2016	Sania Mirza   (2)	Martina Hingis	7–5, 6–4
	Barbora Strýcová	Coco Vandeweghe
2015	Chan Hao-ching	Casey Dellacqua	7–5, 6–4
	Chan Yung-jan	Yaroslava Shvedova
2014	Raquel Kops-Jones	Tímea Babos	6–1, 2–0, ret.
	Abigail Spears   (2)	Kristina Mladenovic
2013	Hsieh Su-wei	Anna-Lena Grönefeld	2–6, 6–3, [12–10]
	Peng Shuai	Květa Peschke
2012	Andrea Hlaváčková	Katarina Srebotnik	6–1, 6–3
	Lucie Hradecká	Zheng Jie
2011	Vania King	Natalie Grandin	6–4, 3–6, [11–9]
	Yaroslava Shvedova	Vladimíra Uhlířová
2010	Victoria Azarenka	Lisa Raymond	7–6 (7–4) , 7–6 (10–8)
	Maria Kirilenko   (2)	Rennae Stubbs
2009	Cara Black	Nuria Llagostera Vives	6–3, 0–6, [10–2]
	Liezel Huber	María José Martínez Sánchez
↑  Premier 5 tournament  ↑
2008	Maria Kirilenko	Hsieh Su-wei	6–3, 4–6, [10–8]
	Nadia Petrova	Yaroslava Shvedova
2007	Bethanie Mattek	Alina Jidkova	7–6 (7–4) , 7–5
	Sania Mirza	Tatiana Poutchek
2006	Maria Elena Camerin	Marta Domachowska	6–4, 3–6, 6–2
	Gisela Dulko	Sania Mirza
2005	Laura Granville	Květa Peschke	3–6, 6–2, 6–4
	Abigail Spears	María Emilia Salerni
2004	Jill Craybas	Emmanuelle Gagliardi	7–5, 7–6 (7–2)
	Marlene Weingärtner	Anna-Lena Grönefeld
1989–2003	Not held
1988	Beth Herr	Lindsay Bartlett	4–6, 7–6 (11–9) , 6–1
	Candy Reynolds	Helen Kelesi
1974–1987	Not held
1973	Pat Pretorius	Evonne Goolagong	7–6, 3–6, 6–2
	Ilana Kloss	Janet Young
1972	Margaret Court	Brenda Kirk	6–4, 6–1
	Evonne Goolagong	Pat Pretorius
1971	Helen Gourlay	Gail Chanfreau	6–4, 6–4
	Kerry Harris   (2)	Winnie Shaw
1970	Rosie Casals	Helen Gourlay	12–10, 6–1
	Gail Chanfreau	Pat Walkden
1969	Kerry Harris	Emilie Burrer	6–3, 9–7
	Valerie Ziegenfuss	Pam Richmond
1968	Emilie Burrer	Peggy Michel	6–2, 6–3
	Linda Tuero	Carol Gay