Frederica Piedade (born 5 June 1982) is a former Portuguese tennis player.

Her career-high WTA singles ranking is 142, which she reached on 15 May 2006; her best doubles ranking is No. 158, achieved on 16 February 2009. Piedade has competed for the Portugal Fed Cup team, having a total win–loss record of 12–4.

Though not officially retired, she hasn't played in the professional circuit since 2009. In the summer of 2014, Frederica toured the Portuguese communities on Long Island, New York as she prepared for the US Open.^[1]

Result	No.	Date	Tournament	Surface	Opponent	Score
Loss	1.	4 August 2002	ITF Pontevedra, Spain	Hard	Alberta Brianti	4–6, 6–3, 0–6
Loss	2.	11 August 2002	ITF Vigo, Spain	Hard	Alberta Brianti	2–6, 5–7
Win	1.	8 September 2002	ITF Mollerussa, Spain	Hard	Aliénor Tricerri	6–4, 6–2
Loss	3.	9 March 2003	ITF Cairo, Egypt	Clay	Amanda Hopmans	6–7, 4–6
Win	2.	23 March 2003	ITF Cairo, Egypt	Clay	Michaela Michálková	6–2, 3–6, 6–4
Win	3.	18 May 2003	ITF Monzón, Spain	Hard	Kildine Chevalier	6–4, 6–3
Win	4.	22 June 2003	ITF Montemor-o-Novo, Portugal	Hard	Chantal Coombs	6–3, 6–3
Win	5.	20 July 2003	ITF Campos do Jordão, Brazil	Hard	Maria Fernanda Alves	6–2, 6–1
Loss	4.	23 January 2004	ITF Manama, Bahrain	Hard	Jennifer Schmidt	4–6, 3–6
Loss	5.	7 March 2004	ITF Melilla, Spain	Hard	Nina Bratchikova	2–6, 4–6
Win	6.	21 March 2004	ITF Tel Aviv, Israel	Hard	Cheli Bargil	4–6, 6–1, 6–0
Loss	6.	25 April 2004	ITF Poza Rica, Mexico	Hard	Jessica Kirkland	3–6, 2–6
Win	7.	8 August 2004	ITF Vigo, Spain	Hard	Lucía Jiménez	6–1, 6–3
Win	8.	17 October 2004	ITF Mexico City	Hard	Melissa Torres Sandoval	7–5, 6–2
Loss	7.	20 March 2005	ITF Morelia, Spain	Hard	Jenifer Widjaja	6–1, 4–6, 5–7
Loss	8.	9 October 2005	ITF Juárez, Mexico	Clay	Olga Vymetálková	6–7, 2–6
Win	9.	28 November 2005	ITF San Luis Potosí, Mexico	Hard	Jorgelina Cravero	6–3, 6–1
Loss	9.	15 October 2006	ITF Saltillo, Mexico	Hard	Jorgelina Cravero	2–6, 2–6
Loss	10.	19 August 2007	ITF Bogotá, Colombia	Clay	Teliana Pereira	6–7, 2–6
Win	10.	27 April 2008	ITF Toluca, Mexico	Hard	Bo Verhulsdonk	6–3, 6–3
Loss	11.	13 July 2008	ITF Valladolid, Spain	Hard	Estrella Cabeza Candela	4–6, 6–7
Loss	12.	12 October 2008	ITF San Luis Potosí, Mexico	Hard	Oksana Kalashnikova	5–7, 6–4, 4–6
Win	11.	11 October 2009	ITF Mexico City	Hard	Marina Giral Lores	6–1, 6–2

Result	No.	Date	Tournament	Surface	Partner	Opponents	Score
Loss	1.	13 September 1998	ITF Póvoa de Varzim, Portugal	Hard	Ana Gaspar	Marta Marrero Aleksandra Srndovic	1–6, 0–6
Loss	2.	2 July 2000	ITF Elvas, Portugal	Hard	Carlota Santos	Diana Brunel Edith Nunes	5–7, 2–6
Loss	3.	23 June 2002	ITF Montemor-o-Novo, Portugal	Hard	Alberta Brianti	Carlota Santos Neuza Silva	4–6, 2–6
Win	4.	5 August 2002	ITF Pontevedra, Spain	Hard	Neuza Silva	Alberta Brianti İpek Şenoğlu	6–2, 4–6, 6–2
Win	5.	22 September 2002	ITF Barcelona, Spain	Hard	Iveta Gerlová	Marta Fraga Adriana González-Peñas	6–4, 6–4
Win	6.	29 September 2002	ITF Lleida, Spain	Clay	Neuza Silva	Caroline-Ann Basu Aliénor Tricerri	6–7(5–7), 6–2, 6–4
Loss	7.	23 March 2003	ITF Cairo, Egypt	Clay	Borka Majstorović	Daniela Berček Vladimíra Uhlířová	w/o
Win	8.	11 May 2003	ITF Tortosa, Spain	Clay	İpek Şenoğlu	Liana Ungur María Pilar Sánchez Alayeto	6–4, 7–6
Loss	9.	14 July 2003	ITF Campos do Jordão, Brazil	Hard	Melisa Arévalo	Carla Tiene Maria Fernanda Alves	6–7, 2–6
Loss	10.	24 January 2004	ITF Manama, Bahrain	Hard	Christina Zachariadou	Raissa Gourevitch Ekaterina Kozhokina	4–6, 4–6
Win	11.	8 February 2004	ITF Vale do Lobo, Portugal	Clay	Kildine Chevalier	Soledad Esperón Flavia Mignola	2–6, 6–3, 6–4
Loss	12.	15 February 2004	ITF Albufeira, Portugal	Clay	Kildine Chevalier	Zuzana Černá Vladimíra Uhlířová	7–6, 4–6, 5–7
Win	13.	21 March 2004	ITF Ramat Hasharon, Israel	Hard	Iveta Gerlová	Julia Gandia Gabriela Velasco Andreu	6–2, 4–6, 6–2
Win	14.	28 March 2004	ITF Elda, Spain	Clay	Lourdes Domínguez Lino	Andrea Hlaváčková Jana Hlaváčková	w/o
Win	15.	25 April 2004	ITF Poza Rica, Mexico	Hard	Lourdes Domínguez Lino	Jorgelina Cravero İpek Şenoğlu	7–5, 6–0
Win	16.	20 June 2004	ITF Montemor-o-Novo, Portugal	Hard	Alienor Tricerri	Alanna Broderick Megan Moulton-Levy	6–4, 6–3
Loss	17.	28 June 2004	ITF Mont-de-Marsan, France	Clay	Nina Bratchikova	Lourdes Domínguez Lino Paula García	3–6, 6–3, 4–6
Win	18.	1 August 2004	ITF Pontevedra, Spain	Hard	Alienor Tricerri	Julianna Gates Natasha Kersten	7–5, 6–4
Loss	19.	26 September 2004	ITF Jounieh, Lebanon	Clay	Nuria Llagostera Vives	Petra Cetkovská Hana Šromová	4–6, 2–6
Win	20.	3 July 2005	ITF Mont-de-Marsan, France	Hard	Natalia Gussoni	Émilie Bacquet Violette Huck	6–1, 7–6
Loss	21.	18 July 2005	ITF Campos do Jordão, Brazil	Hard	Maria Fernanda Alves	Letícia Sobral María José Argeri	0–6, 2–6
Win	22.	29 July 2006	ITF Pétange, Luxembourg	Clay	Erica Krauth	Lina Stančiūtė Claudine Schaul	6–3, 6–3
Win	23.	6 August 2006	ITF Baden-Baden, Germany	Clay	Jarmila Gajdošová	Libuše Průšová Barbora Záhlavová-Strýcová	7–5, 4–6, 7–6(8–6)
Loss	24.	21 October 2006	ITF Victoria, Mexico	Hard	Jorgelina Cravero	Carla Tiene Jenifer Widjaja	7–5, 4–6, 4–6
Win	25.	14 April 2007	ITF Gran Canaria, Spain	Clay	Anne Keothavong	Marta Marrero Carla Suárez Navarro	w/o
Loss	26.	6 October 2007	ITF Monterrey, Mexico	Hard	Roxane Vaisemberg	Florencia Molinero Melissa Torres Sandoval	1–6, 5–7
Win	27.	13 January 2008	ITF St. Leo, United States	Hard	Soledad Esperón	Corinna Dentoni Anastasia Pivovarova	6–2, 6–7, [10–7]
Win	28.	26 April 2008	ITF Toluca, Mexico	Hard	Agustina Lepore	Lena Litvak Rebecca Marino	6–4, 6–2
Loss	29.	30 June 2008	ITF Mont-de-Marsan, France	Clay	Melanie Klaffner	İpek Şenoğlu Neuza Silva	4–6, 2–6
Loss	30.	3 August 2008	ITF Vigo, Spain	Hard	Nina Bratchikova	Neuza Silva Nicole Thijssen	2–6, 4–6
Win	31.	6 October 2008	ITF San Luis Potosí, Mexico	Hard	Maria Fernanda Alves	Soledad Esperón Florencia Molinero	5–7, 6–1, [10–8]
Loss	32.	18 October 2008	ITF Mexico City	Hard	Sara del Barrio Aragón	Jorgelina Cravero Veronica Spiegel	4–6, 5–7
Loss	33.	9 November 2008	ITF Auburn, United States	Hard	Roxane Vaisemberg	Raquel Kops-Jones Abigail Spears	5–7, 1–6
Loss	34.	9 February 2009	ITF Cali, Colombia	Clay	Anastasiya Yakimova	Betina Jozami Arantxa Parra Santonja	3–6, 1–6
Loss	35.	4 April 2009	ITF Pelham, United States	Clay	Marie-Ève Pelletier	Danielle Harmsen Kim Kilsdonk	4–6, 7–5, [9–11]
Win	36.	13 June 2009	ITF Campobasso, Italy	Clay	Jorgelina Cravero	Anna Floris Valentina Sulpizio	6–3, 6–4
Loss	37.	22 June 2009	ITF Getxo, Spain	Clay	Agustina Lepore	Anastasia Poltoratskaya Maria Kondratieva	3–6, 1–6
Win	38.	5 October 2009	ITF Mexico City	Hard	María Fernanda Álvarez Terán	Karen Castiblanco Alina Jidkova	6–3, 6–4

• Luso Ténis Profile (in Portuguese)

• Frederica Piedade at the Women's Tennis Association
• Frederica Piedade at the International Tennis Federation
• Frederica Piedade at the Billie Jean King Cup (archived)