Cecilia Costa Melgar
Cecilia Raquel Costa Melgar is a Chilean former tennis player.
Costa Melgar won four singles titles and seven doubles titles on the ITF circuit. On 20 May 2013, she reached her best singles ranking of world number 367. On 8 September 2014, she peaked at world number 216 in the doubles rankings.
Since her debut for Chile in 2010, Costa Melgar has a 15–6 record for her country in Fed Cup competition.
ITF finals
Singles (4–6)
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 23 August 2008 | Bell Ville, Argentina | Clay |  Verónica Spiegel | 1–6, 1–6 |
| Runner-up | 2. | 29 October 2011 | Bogotá, Colombia | Clay |  Patricia Kú Flores | 7–6, 5–7, 3–6 |
| Runner-up | 3. | 28 July 2012 | La Paz, Bolivia | Clay | Guadalupe Moreno | 5–7, 3–6 |
| Runner-up | 4. | 4 August 2012 | Santa Cruz de la Sierra, Bolivia | Clay |  Camila Silva | 4–6, 7–6, 3–6 |
| Winner | 1. | 15 September 2012 | Pereira, Colombia | Clay |  Anastasia Kharchenko | 6–2, 6–3 |
| Winner | 2. | 22 September 2012 | Bogotá, Colombia | Clay |  Yuliana Lizarazo | 1–6, 6–3, 6–4 |
| Winner | 3. | 27 October 2012 | Santiago, Chile | Clay | Daniela Seguel | 6–4, 6–2 |
| Runner-up | 5. | 3 November 2012 | Quillota, Chile | Clay | Camila Silva | 5–7, 6–4, 1–6 |
| Winner | 4. | 3 August 2013 | La Paz, Bolivia | Clay | Macarena Olivares López | 4–6, 6–1, 6–1 |
| Runner-up | 6. | 30 November 2013 | Santiago, Chile | Clay | Nadia Podoroska | 2–6, 7–5, 5–3 ret. |
Doubles (7–10)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Winner | 1. | 27 November 2009 | Lima, Peru | Clay | Andrea Koch Benvenuto | Agustina Eskenazi Paula Ormaechea | 6–1, 6–3 |
| Winner | 2. | 20 May 2011 | Itaparica, Brazil | Hard |  Flávia Guimarães Bueno |  Isabella Robbiani Luciana Sarmenti | 6–3, 3–6, |
| Runner-up | 1. | 12 August 2011 | Versmold, Germany | Clay | Daniela Seguel | Elizaveta Ianchuk  Julia Mayr | 4–6, 3–6 |
| Runner-up | 2. | 14 October 2011 | São Paulo, Brazil | Clay | Gabriela Cé | Maria Fernanda Alves Karina Venditti | 2–6, 4–6 |
| Runner-up | 3. | 28 October 2011 | Bogotá, Colombia | Clay | Belén Ludueña | Patricia Kú Flores Katherine Miranda Chang | 4–6, 5–7 |
| Runner-up | 4. | 31 March 2012 | Puebla, Mexico | Hard | Flávia Guimarães Bueno |  Ivette López Ana Paula de la Peña | 1–6, 6–7 |
| Winner | 3. | 14 September 2012 | Pereira, Colombia | Clay | Anastasia Kharchenko |  Gabriela Coglitore Patricia Kú Flores | 6–1, 6–0 |
| Runner-up | 5. | 19 October 2012 | Santiago, Chile | Clay | Daniela Seguel | Aranza Salut Carolina Zeballos | 6–4, 4–6, |
| Winner | 4. | 26 October 2012 | Santiago, Chile | Clay | Daniela Seguel | Ornella Caron Aranza Salut | 6–3, 6–4 |
| Winner | 5. | 2 November 2012 | Quillota, Chile | Clay | Camila Silva | Sofía Luini Bárbara Montiel | 6–1, 6–1 |
| Runner-up | 6. | 9 August 2013 | Santa Cruz, Bolivia | Clay | Camila Giangreco Campiz |  María Fernanda Álvarez Terán Daniela Ruiz | 5–7, 3–6 |
| Winner | 6. | 13 September 2013 | Mont-de-Marsan, France | Clay | Daniela Seguel |  Alizé Lim Laura Thorpe | 6–4, 6–2 |
| Runner-up | 7. | 27 September 2013 | Seville, Spain | Clay | Gaia Sanesi | Paula Cristina Gonçalves Florencia Molinero | 3–6, 5–7 |
| Runner-up | 8. | 25 October 2013 | Casablanca, Morocco | Clay | Anastasia Grymalska |  Paula Kania  Valeria Solovyeva | 6–7, 4–6 |
| Runner-up | 9. | 13 December 2013 | Santiago, Chile | Clay | Daniela Seguel | Verónica Cepede Royg María Irigoyen | 6–2, 4–6, |
| Winner | 7. | 18 July 2014 | Knokke, Belgium | Clay |  Aliona Bolsova Zadoinov |  Justine De Sutter Sofie Oyen | 4–6, 6–3, |
| Runner-up | 10. | 24 October 2014 | Lima, Peru | Clay | Nathaly Kurata | Sofía Luini Guadalupe Pérez Rojas | 4–6, 3–6 |