Ernesto Fernández-Holmann is a Nicaraguan businessman and entrepreneur. He is currently the chair of Grupo Ayucus. Fernández-Holmann has been a member of the Inter-American Dialogue since 2005. Fernández-Holmann was the founder of Grupo Financiero Uno, a commercial bank that provides various financial services in Costa Rica, Guatemala, Panama, Honduras, El Salvador, and Nicaragua. He served as chair and CEO of the company until its acquisition by Citigroup in 2007.