Sanja Ančić (born 18 July 1988) is a Croatian professional tennis player born in Split. Ančić plays right handed, has a two-handed backhand and is the sister of professional tennis player Mario Ančić.
She has not won any WTA Tour tournaments yet, but managed to win a total of eight ITF tournaments in singles and one in doubles. She played alongside her brother in the 2007 Hopman Cup. Her highest singles ranking is 159th which she reached on 11 September 2006, while on 18 December 2006 she reached her highest doubles ranking, position 250.
| Legend (Singles) | Legend (Doubles) |
| Tier I (0) | Tier I (0) |
| Tier II (0) | Tier II (0) |
| Tier III (0) | Tier III (0) |
| Tier IV (0) | Tier IV (0) |
| Grand Slam Title (0) | Grand Slam Title (0) |
| WTA Tour Championship (0) | WTA Tour Championship (0) |
| ITF Circuit (8) | ITF Circuit (1) |
| No. | Date | Tournament | Surface | Opponent in the final | Score |
| 1. | July 25 2004 | Ancona, Italy | Clay | Ekaterina Ivanova | 6–2 6–1 |
| 2. | October 10 2004 | Dubrovnik, Croatia | Clay | Lenka Dlhopolcova | 6–4 6–2 |
| 3. | April 10 2005 | Makarska, Croatia | Clay | Emilie Bacquet | 6–4 6–3 |
| 4. | April 17 2005 | Hvar, Croatia | Clay | Masa Zec-Peskiric | 6–3 6–1 |
| 5. | April 24 2005 | Bol, Croatia | Clay | Ivana Lisjak | 6–3 6–1 |
| 6. | June 11 2006 | Grado, Italy | Clay | Ana Vrljic | 6–4 3–6 6–4 |
| 7. | August 20 2006 | Rimini, Italy | Clay | Dominika Cibulkova | 7–6 3–6 6–3 |
| 8. | 10 September 2006 | Mestre, Italy | Clay | Sandra Klosel | 6–1 6–2 |
| No. | Date | Tournament | Surface | Partner | Opponent in the final | Score |
| 1. | September 18 2005 | Sofia, Bulgaria | Clay | Tamira Paszek | Joana Cortez Karolina Kosinska | 6–7 6–2 6–4 |