Ana Marcela Jesus Soares da Cunha (born 23 March 1992) is a Brazilian swimmer who specializes in the open water swimming marathon.

[9] Cunha qualified for the 2008 Summer Olympics in Beijing, after placing tenth at the FINA World Open Water Swimming Championships in Seville, Spain.

[10] She became the youngest-ever swimmer to participate in the inaugural women's 10 km open water marathon, against a field of twenty-four other competitors, including her teammate Poliana Okimoto, South African amputee Natalie du Toit, British duo Keri-Anne Payne and Cassandra Patten, and sixteen-year-old American Chloe Sutton.

The following year, she reinforced her lead in the FINA 10 km Marathon Swimming World Cup circuit, by dominating all eight meets of the series.

[16] Despite her first world championship success, Cunha nearly missed out of the final slot for the 2012 Summer Olympics in London, as she placed eleventh in the 10 km marathon, with a slowest time of 2:02:22.2, four seconds behind Spain's Erika Villaécija García.

[19] At the 2013 FINA World Championships in Barcelona, Spain, Cunha handed an entire medal haul for the Brazilians in the 5 km marathon, as she snatched the bronze in 56:44.4.

[30] However, she was unable to live up to the pressure of winning at home, finishing in tenth, while blaming the underperformance on missing the in-race nutrition.

[41][42][43] At the 2022 World Aquatics Championships held in Budapest, Hungary, she won her second gold medal in a row in the Women's 5 km open water, with a time of 57:52.9.