Ekaterina Lopes (née Ivanova; born 18 December 1987) is a Russian former tennis player.

Her highest WTA rankings are 136 in singles, which she reached in June 2009, and 142 in doubles, set in January 2012. Her strongest showing in a tour event was reaching the quarterfinal of the Barcelona Ladies Open in 2008 as a qualifier.

On 18 October 2011, at the Kremlin Cup, Lopes defeated world No. 13, Jelena Janković, 6–4, 1–6, 6–4.

Outcome	No.	Date	Tournament	Surface	Opponent	Score
Runner-up	1.	25 July 2004	ITF Ancona, Italy	Clay	Sanja Ančić	2–6, 1–6
Winner	1.	26 June 2005	ITF Bucharest, Romania	Clay	Corina Corduneanu	4–6, 6–3, 7–5
Runner-up	2.	8 October 2006	ITF Barcelona, Spain	Clay	Tathiana Garbin	3–6, 5–7
Winner	2.	21 September 2008	Save Cup, Italy	Clay	Romina Oprandi	6–3, 3–0 ret.
Winner	3.	7 June 2009	ITF Brno, Czech Republic	Clay	Sandra Záhlavová	6–0, 6–3
Runner-up	3.	8 August 2009	ITF Moscow, Russia	Clay	Ksenia Pervak	6–4, 4–6, 2–6
Runner-up	4.	15 August 2009	ITF Moscow, Russia	Clay	Ksenia Pervak	0–6, 2–6
Runner-up	5.	5 June 2011	Internazionali di Roma, Italy	Clay	Christina McHale	2–6, 4–6
Winner	4.	23 February 2014	ITF Palma Nova, Spain	Clay	Bárbara Luz	6–4, 6–2
Winner	5.	16 March 2014	ITF Ponta Delgada, Portugal	Hard	Bárbara Luz	6–4, 6–2

Result	No.	Date	Tournament	Surface	Partner	Opponents	Score
Loss	1.	25 June 2005	ITF Bucharest, Romania	Clay	Elena Chalova	Corina Corduneanu Gabriela Niculescu	2–6, 4–6
Loss	2.	10 July 2005	ITF Krasnoarmeysk, Russia	Hard	Elena Chalova	Anna Bastrikova Julia Efremova	2–6, 6–7
Win	1.	13 August 2005	ITF Moscow, Russia	Clay	Olga Panova	Anna Bastrikova Vasilisa Davydova	7–5, 6–3
Loss	3.	4 September 2005	ITF Balashikha, Russia	Clay	Olga Panova	Anna Bastrikova Nina Bratchikova	2–6, 2–6
Loss	4.	4 February 2006	ITF Belfort, France	Hard (i)	Irina Kuzmina	Kristina Barrois Kathrin Wörle	1–6, 1–6
Loss	5.	10 February 2006	ITF Capriolo, Italy	Carpet (i)	Margalita Chakhnashvili	Darya Kustova Ekaterina Makarova	2–6, 4–6
Loss	6.	18 August 2006	ITF Rimini, Italy	Clay	Ekaterina Dzehalevich	Mervana Jugić-Salkić Gabriela Chmelinová	3–6, 6–1, 2–6
Win	2.	22 September 2006	ITF Lecce, Italy	Clay	Teodora Mirčić	Kildine Chevalier Adriana Serra Zanetti	7–6(4), 6–4
Loss	7.	15 April 2007	Open de Biarritz, France	Clay	Iryna Brémond	Evgeniya Rodina Yevgenia Savransky	6–2, 1–6, 3–6
Win	3.	28 April 2007	ITF Torrent, Spain	Clay	Evgeniya Rodina	Marta Marrero Carla Suárez Navarro	7–6(7), 3–6, 6–2
Loss	8.	10 November 2007	ITF Minsk, Belarus	Hard (i)	Vesna Manasieva	Alla Kudryavtseva Anastasia Pavlyuchenkova	0–6, 2–6
Win	4.	22 February 2009	ITF Surprise, United States	Hard	Jorgelina Cravero	Ahsha Rolle Yanina Wickmayer	6–1, 6–1
Loss	9.	28 March 2009	ITF Latina, Italy	Clay	Marina Shamayko	Katalin Marosi Marina Tavares	2–6, 0–6
Win	5.	7 August 2009	ITF Moscow, Russia	Clay	Arina Rodionova	Veronika Kapshay Melanie Klaffner	6–2, 6–2
Win	6.	14 August 2009	ITF Moscow, Russia	Clay	Arina Rodionova	Valeria Savinykh Marina Shamayko	6–3, 6–3
Loss	10.	17 October 2009	ITF Madrid, Spain	Clay	Arina Rodionova	Darya Kustova Renata Voráčová	2–6, 2–6
Win	7.	18 July 2010	Contrexéville Open, France	Clay	Nina Bratchikova	Jelena Dokic Sharon Fichman	6–4, 4–6, [10–3]
Win	8.	7 August 2010	Tatarstan Open, Kazakhstan	Hard	Nina Bratchikova	Yuliana Fedak Anastasiya Vasylyeva	6–4, 6–4
Loss	11.	11 February 2011	ITF Cali, Colombia	Clay	Kathrin Wörle	Irina-Camelia Begu Elena Bogdan	6–2, 6–7(6), [9–11]
Win	9.	28 May 2011	Grado Tennis Cup, Italy	Clay	María Irigoyen	Liu Wanting Sun Shengnan	6–3, 6–0
Win	10.	12 August 2011	ITF Kazan, Russia	Hard	Andreja Klepač	Vitalia Diatchenko Alexandra Panova	w/o
Win	11.	10 September 2011	Internazionali di Biella, Italy	Clay	Lara Arruabarrena	Janette Husárová Renata Voráčová	6–3, 0–6, [10–3]
Loss	12.	2 October 2011	ITF Clermont-Ferrand, France	Hard (i)	Ksenia Lykina	Mervana Jugić-Salkić Anne Keothavong	6–4, 3–6, [8–10]
Loss	13.	13 November 2011	ITF Benicarlo, Spain	Clay	Aleksandrina Naydenova	Inés Ferrer Suárez Richèl Hogenkamp	6–7(6), 4–6

• Ekaterina Lopes at the Women's Tennis Association
• Ekaterina Lopes at the International Tennis Federation