Melanie Klaffner (German pronunciation: [ˈklafnɐ]; born 22 May 1990) is an Austrian former tennis player.^[1][2][3] On 27 January 2014, she reached her best singles ranking of world No. 175. On 25 May 2009, she peaked at No. 148 in the WTA doubles rankings.

Klaffner has won 15 singles and 26 doubles titles on the ITF Circuit.^[4]

Playing for Austria Fed Cup team, Klaffner has a win–loss record of 23–20 as of 2024.

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	May 2006	ITF Balș, Romania	10,000	Clay	Diana Enache	6–3, 6–4
Win	2–0	Jun 2007	ITF Lenzerheide, Switzerland	10,000	Clay	Patricia Mayr	7–6(2), 6–4
Loss	2–1	Jun 2009	ITF Ystad, Sweden	25,000	Clay	Lenka Wienerová	1–6, 6–7(3)
Loss	2–2	Sep 2009	Telavi Open, Georgia	25,000	Clay	Réka Luca Jani	2–6, 4–6
Win	3–2	May 2010	ITF Tanjung Selor, Indonesia	25,000	Hard (i)	Zhang Ling	6–3, 7–6(1)
Win	4–2	Sep 2010	Telavi Open, Georgia	25,000	Clay	Irina Buryachok	3–6, 6–0, 3–0 ret.
Win	5–2	Feb 2012	ITF Leimen, Germany	10,000	Hard (i)	Tereza Smitková	2–6, 7–6(5), 6–1
Win	6–2	Dec 2012	ITF Djibouti	10,000	Hard	Amandine Hesse	4–6, 7–5, 6–2
Win	7–2	Feb 2013	ITF Muzaffarnagar, India	25,000	Grass	Veronika Kapshay	6–2, 6–0
Win	8–2	Mar 2013	ITF Sharm El Sheikh, Egypt	10,000	Hard	Valeria Podda	6–3, 6–1
Win	9–2	Mar 2013	ITF Sharm El Sheikh, Egypt	10,000	Hard	Natela Dzalamidze	6–1, 6–0
Win	10–2	Apr 2013	ITF Phuket, Thailand	25,000	Hard (i)	Doroteja Erić	3–6, 6–3, 6–2
Loss	10–3	Jun 2013	ITF Ystad, Sweden	25,000	Clay	Danka Kovinić	3–6, 3–6
Win	11–3	Jun 2013	ITF Zlín, Czech Republic	25,000	Clay	Kristína Kučová	6–3, 6–2
Win	12–3	Feb 2015	ITF Sharm El Sheikh, Egypt	10,000	Hard	Yuuki Tanaka	7–5, 3–6, 6–2
Loss	12–4	Mar 2015	ITF Sharm El Sheikh, Egypt	10,000	Hard	Nudnida Luangnam	2–6, 4–6
Win	13–4	Nov 2015	ITF Casablanca, Morocco	25,000	Clay	Irina Khromacheva	2–6, 7–6(7), 2–1 ret.
Win	14–4	Nov 2015	ITF Cairo, Egypt	10,000	Clay	Naomi Totka	6–4, 6–2
Win	15–4	Oct 2016	ITF Sharm El Sheikh, Egypt	10,000	Hard	Ana Vrljić	7–5, 6–3
Loss	15–5	Dec 2017	ITF Cairo, Egypt	15,000	Clay	Andreea Roșca	4–6, 4–6
Loss	15–6	Dec 2017	ITF Cairo, Egypt	15,000	Clay	Andreea Roșca	1–6, 3–6
Loss	15–7	Aug 2018	ITF Savitaipale, Finland	15,000	Clay	Alexandra Damaschin	6–2, 2–6, 0–6
Loss	15–8	Apr 2019	ITF Cairo, Egypt	15,000	Clay	Simona Waltert	6–7(6), 5–7
Loss	15–9	Nov 2019	ITF Sharm El Sheikh, Egypt	15,000	Hard	Lee Pei-chi	2–6, 6–2, 2–6
Loss	15–10	May 2021	ITF Heraklion, Greece	15,000	Clay	Lena Papadakis	3–6, 3–6
Loss	15–11	May 2022	ITF Cairo, Egypt	15,000	Clay	Yang Ya-yi	3–6, 3–6

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Apr 2007	ITF Bournemouth, UK	10,000	Clay	Nicole Riner	Alenka Hubacek Jessica Moore	7–5, 4–6, 4–6
Win	1–1	May 2007	ITF Rabat, Morocco	10,000	Clay	Mihaela Buzărnescu	Silvia Disderi Samia Medjahdi	6–1, 6–4
Win	2–1	Jun 2007	ITF Oslo, Norway	10,000	Clay	Eva-Maria Hoch	Mari Andersson Karoline Steiro	6–2, 6–3
Loss	2–2	Feb 2008	ITF Cali, Colombia	25,000	Clay	Ksenia Milevskaya	Mailen Auroux Estefanía Craciún	1–6, 4–6
Win	3–2	May 2008	ITF Antalya, Turkey	25,000	Clay	Ksenia Milevskaya	Oksana Kalashnikova Pemra Özgen	6–2, 7–5
Win	4–2	May 2008	ITF Galatina, Italy	25,000	Clay	Jessica Moore	Maria Fernanda Alves María Irigoyen	3–6, 6–1, [10–6]
Win	5–2	Jun 2008	ITF Grado, Italy	25,000	Clay	Mariana Duque Mariño	Marinne Giraud Christina Wheeler	6–1, 6–2
Loss	5–3	Jun 2008	ITF Mont-de-Marsan, France	25,000	Clay	Frederica Piedade	İpek Şenoğlu Neuza Silva	4–6, 2–6
Win	6–3	Oct 2008	ITF Istanbul, Turkey	25,000	Hard (i)	Sandra Martinović	Çağla Büyükakçay Pemra Özgen	6–4, 6–7(5), [10–6]
Loss	6–4	Feb 2009	ITF Stockholm, Sweden	25,000	Hard (i)	Ksenia Milevskaya	Violette Huck Emma Laine	6–3, 6–7(5), [8–10]
Win	7–4	Feb 2009	ITF Biberach, Germany	50,000	Hard (i)	Sandra Klemenschits	Kristina Barrois Yvonne Meusburger	3–6, 6–4, [17–15]
Loss	7–5	Apr 2009	ITF Osprey, United States	25,000	Clay	Heidi El Tabakh	Lindsay Lee-Waters Story Tweedie-Yates	3–6, 7–6(5), [10–12]
Win	8–5	May 2009	ITF Indian Harbour Beach, United States	50,000	Clay	Heidi El Tabakh	Tetiana Luzhanska Lilia Osterloh	6–3, 3–6, [10–7]
Loss	8–6	Jun 2009	ITF Ystad, Sweden	25,000	Clay	Hanna Nooni	Sofia Arvidsson Sandra Roma	4–6, 4–6
Loss	8–7	Aug 2009	ITF Moscow, Russia	25,000	Clay	Veronika Kapshay	Ekaterina Ivanova Arina Rodionova	2–6, 2–6
Loss	8–8	Aug 2009	ITF Katowice, Poland	25,000	Clay	Johanna Larsson	Karolina Kosińska Ágnes Szatmári	1–6, 6–2, [5–10]
Win	9–8	Jul 2010	ITF Valladolid, Spain	25,000	Hard	Anna Smith	Yera Campos Molina Leticia Costas	6–3, 2–6, [10–7]
Loss	9–9	Sep 2010	Telavi Open, Georgia	25,000	Clay	Oksana Kalashnikova	Veronika Kapshay Ágnes Szatmári	1–6, 6–2, [8–10]
Win	10–9	Oct 2010	Lagos Open, Nigeria	25,000	Hard	Karolina Kosińska	Nina Bratchikova Ágnes Szatmári	3–6, 7–5, [10–7]
Loss	10–10	Jun 2011	ITF Kharkiv, Ukraine	25,000	Clay	Lina Stančiūtė	Valentyna Ivakhnenko Kateryna Kozlova	4–6, 3–6
Win	11–10	Oct 2011	Lagos Open, Nigeria	25,000	Hard	Nina Bratchikova	Tadeja Majerič Aleksandrina Naydenova	7–5, 5–7, [10–6]
Win	12–10	Oct 2011	Lagos Open, Nigeria	25,000	Hard	Ágnes Szatmári	Danka Kovinić Elina Svitolina	6–0, 6–7(1), [10–5]
Win	13–10	Mar 2012	ITF Bangalore, India	25,000	Hard	Tamaryn Hendler	Tadeja Majerič Anja Prislan	6–2, 4–6, [10–6]
Win	14–10	Aug 2012	Bursa Cup, Turkey	10,000	Clay	Laura Ioana Paar	Erika Takao Remi Tezuka	6–2, 6–2
Loss	14–11	Jan 2013	ITF Sharm El Sheikh, Egypt	10,000	Hard	Melis Sezer	Lidziya Marozava Eugeniya Pashkova	3–6, 1–6
Loss	14–12	Aug 2014	ITF Bogotá, Colombia	100,000	Clay	Patricia Mayr-Achleitner	Lara Arruabarrena Florencia Molinero	2–6, 0–6
Win	15–12	Jan 2015	ITF Sharm El Sheikh, Egypt	10,000	Hard	Anastasija Sevastova	Caroline Rohde-Moe Midori Yamamoto	6–4, 6–4
Loss	15–13	Feb 2015	ITF Sharm El Sheikh, Egypt	10,000	Hard	Veronika Kapshay	Anna Morgina Yuuki Tanaka	6–4, 4–6, [6–10]
Loss	15–14	Nov 2015	ITF Casablanca, Morocco	10,000	Clay	Anna Morgina	Olga Parres Azcoitia Camilla Rosatello	2–6, ret.
Win	16–14	Apr 2016	ITF Sharm El Sheikh, Egypt	10,000	Hard	Julia Wachaczyk	Katie Boulter Oleksandra Korashvili	6–4, 2–6, [13–11]
Win	17–14	Oct 2016	ITF Sharm El Sheikh, Egypt	10,000	Hard	Ana Bianca Mihăilă	Ola Abou Zekry Anastasia Pribylova	6–4, 6–2
Win	18–14	Mar 2017	ITF Sharm El Sheikh, Egypt	15,000	Hard	Laura Ioana Paar	Emilie Francati Kajsa Rinaldo Persson	6–4, 7–5
Loss	18–15	Apr 2017	ITF Sharm El Sheikh, Egypt	15,000	Hard	Laura Ioana Paar	Ana Veselinović You Xiaodi	6–2, 5–7, [11–13]
Loss	18–16	Dec 2017	ITF Cairo, Egypt	15,000	Clay	Jelena Stojanovic	Rio Kitagawa Nastja Kolar	6–1, 4–6, [2–10]
Loss	18–17	Dec 2017	ITF Cairo, Egypt	15,000	Clay	Jelena Stojanovic	Andreea Roșca Gabriela Nicole Tătăruș	1–6, 3–6
Loss	18–18	Mar 2018	ITF Hammamet, Tunisia	15,000	Clay	Oana Georgeta Simion	Oana Gavrilă Laura Pigossi	5–7, 7–6(6), [9–11]
Win	19–18	Apr 2018	ITF Sharm El Sheikh, Egypt	15,000	Hard	Anna Morgina	Alicia Barnett Julia Terziyska	7–5, 6–1
Win	20–18	Jan 2019	ITF Sharm El Sheikh, Egypt	15,000	Hard	Magali Kempen	Jacqueline Cabaj Awad Fiona Ganz	6–4, 6–1
Win	21–18	Mar 2019	ITF Sharm El Sheikh, Egypt	15,000	Hard	Julia Wachaczyk	Merel Hoedt Noa Liauw a Fong	6–2, 6–2
Win	22–18	Apr 2019	ITF Cairo, Egypt	15,000	Clay	Despina Papamichail	Júlia Camargo Silva Katya Malikova	6–3, 6–1
Win	23–18	Jul 2019	ITF Baja, Hungary	25,000	Clay	Mayar Sherif	Réka Luca Jani Lara Salden	6–2, 4–6, [10–8]
Win	24–18	Dec 2021	ITF Cairo, Egypt	15,000	Clay	Anastasia Zolotareva	Viktoriya Petrenko Anna Ureke	2–6, 6–3, [10–2]
Win	25–18	Jan 2022	ITF Cairo, Egypt	25,000	Clay	Sinja Kraus	Adrienn Nagy Prarthana Thombare	7–5, 6–3
Win	26–18	May 2022	ITF Cairo, Egypt	15,000	Clay	Anastasia Zolotareva	Océane Babel Noa Liauw A Fong	6–1, 7–5
Loss	26–19	Sep 2023	ITF Vienna, Austria	60,000	Clay	Sinja Kraus	Irina Bara Weronika Falkowska	3–6, 6–2, [11–13]
Loss	26–20	Oct 2023	ITF Heraklion, Greece	25,000	Clay	Sinja Kraus	Ilinca Amariei Anca Todoni	0–6, 7–5, [1–10]

• Melanie Klaffner at the Women's Tennis Association
• Melanie Klaffner at the International Tennis Federation
• Melanie Klaffner at the Billie Jean King Cup (archived)
• Official website (in German)