Ana Josefa Villanueva Fabián[1] (born March 20, 1982, in Cotuí[2]) is a karateka from the Dominican Republic who won the gold medal at the 2011 and 2015 Pan American Games.

She is a student of Accounting at Universidad Organización y Método[3] and is a member of the Dominican Air Force;[2][4] there she received the promotion to sergeant major in 2011.

[6] Villanueva win the gold medal at the team kumite competition during the 2006 Central American and Caribbean Games, held in Colombia.

[7][8] At the 2009 Central American and Caribbean Championship held in Santiago, Dominican Republic, Ana win the old medal at the Team Kumite category and the silver at the under 50 kg.

[17][18] Three months later, at the 2011 Pan American Games, Ana win the under 50 kg gold medal, defeating the Chilean Gabriela Bruna in the final match.