Valentina Sassi (born 12 July 1980) is an Italian tennis coach and an instructor of the United States Professional Tennis Association (USPTA). She is a former professional tennis player and a doubles bronze medalist for Italy at the 2001 Mediterranean Games.
Born in Seravezza, Sassi made her WTA Tour main-draw debut at the Madrid Open in 2001, as a qualifier. In 2002, she reached her best singles ranking of 144, making main-draw appearances at Oporto and Casablanca that year. Sassi, a right-handed player, won six singles and seven doubles titles on the ITF Women's Circuit, before retiring in 2008.
| $50,000 tournaments |
| $25,000 tournaments |
| $10,000 tournaments |
| Win | 1. | 29 November 1998 | Rio de Janeiro, Brazil | Hard | Joana Cortez | 7–6, 3–6, 6–3 |
| Win | 2. | 8 November 1999 | Le Havre, France | Clay | Virginie Razzano | 6–1, 2–6, 7–5 |
| Loss | 1. | 1 May 2000 | Bari, Italy | Clay | Natalia Gussoni | 6–0, 4–6, 2–6 |
| Win | 3. | 11 June 2001 | Grado, Italy | Clay | Antonella Serra Zanetti | 6–3, 7–5 |
| Loss | 2. | 31 May 2004 | Galatina, Italy | Clay | Paula García | 1–6, 6–3, 2–6 |
| Loss | 3. | 17 January 2006 | Fort Walton Beach, United States | Hard | Gréta Arn | 5–7, 2–6 |
| Win | 4. | 14 July 2007 | Imola, Italy | Hard | Giulia Gatto-Monticone | 7–6(7–1), 6–2 |
| Win | 5. | 12 September 2007 | Casale Monferrato, Italy | Clay | Aurélie Védy | 3–6, 7–6(9–7), 6–2 |
| Win | 6. | 29 September 2007 | Ciampino, Italy | Clay | Verdiana Verardi | 6–1, 1–6, 6–3 |
| Loss | 4. | 19 October 2007 | Settimo San Pietro, Italy | Clay | Anna Floris | 6–7(2–7), 3–6 |
| Loss | 1. | 22 August 1999 | Alghero, Italy | Carpet | Sabina Da Ponte | Roberta Vinci Flavia Pennetta | 2–6, 1–6 |
| Win | 1. | 7 November 1999 | Saint-Raphaël, France | Hard | Maja Matevžič | Victoria Courmes-Benedetti Laëtitia Sanchez | 6–3, 6–1 |
| Loss | 2. | 6 August 2000 | Alghero, Italy | Clay | Alice Canepa | Ayami Takase Tong Ka-po | 6–3, 3–6, 1–6 |
| Loss | 3. | 19 November 2000 | Naples, United States | Clay | Maret Ani | Nana Miyagi Elena Tatarkova | 3–5, 4–2, 4–2, 3–5, 1–4 |
| Loss | 4. | 2 February 2003 | Rockford, United States | Hard | Michaela Paštiková | Debby Haak Seda Noorlander | 5–7, 4–6 |
| Loss | 5. | 11 October 2005 | Ciudad Victoria, Mexico | Hard | Soledad Esperón | María José Argeri Letícia Sobral | 3–6, 4–6 |
| Loss | 6. | 13 November 2005 | Mexico City | Clay | Francesca Lubiani | Jenifer Widjaja Carla Tiene | 6–7(5–7), 3–6 |
| Win | 2. | 22 November 2005 | San Luis Potosí, Mexico | Hard | Francesca Lubiani | Jenifer Widjaja Olga Brózda | 6–3, 4–6, 7–5 |
| Loss | 7. | 18 December 2005 | Bergamo, Italy | Carpet (i) | Francesca Lubiani | Marina Shamayko Ekaterina Bychkova | 1–6, 3–6 |
| Win | 3. | 1 May 2006 | Catania, Italy | Clay | Francesca Lubiani | Diana Brunel Virginie Pichet | w/o |
| Loss | 8. | 30 May 2006 | Galatina, Italy | Clay | Kira Nagy | Danica Krstajić Renata Voráčová | 4–6, 0–6 |
| Win | 4. | 29 July 2006 | Monteroni d'Arbia, Italy | Clay | Aurélie Védy | Matea Mezak Nika Ožegović | 5–7, 6–4, 6–0 |
| Win | 5. | 28 July 2007 | Monteroni d'Arbia, Italy | Clay | Alisa Kleybanova | Elena Pioppo Verdiana Verardi | 7–5, 6–2 |
| Win | 6. | 25 August 2007 | Trecastagni, Italy | Hard | Valentina Sulpizio | Lisa Sabino Nicole Clerico | 4–6, 6–4, 7–5 |
| Loss | 9. | 17 September 2007 | Lecce, Italy | Clay | Kira Nagy | Claire de Gubernatis Tatjana Priachin | 3–6, 2–6 |
| Loss | 10. | 19 October 2007 | Settimo San Pietro, Italy | Clay | Stefania Chieppa | Anna Floris Valentina Sulpizio | 1–6, 4–6 |
| Win | 7. | 5 May 2008 | Florence, Italy | Clay | Kira Nagy | Ksenia Palkina Martina Caciotti | 6–2, 6–3 |
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