Fernando de Higueras Diaz (1930 - January 30, 2008) was a Spanish architect. He graduated from the Superior Technical School of Architecture of Madrid in 1959. His work is recognized worldwide as an original and interesting union of constructivist, rationalist and organic architecture. Higueras was also a musician, a painter and photographer.

Higueras' architecture displays a constructive adaptation to the natural and physical environment. His understanding of architecture came from popular contemporary approaches, and his spectacular but simple structural solutions, such as vaults, have been influential. His work appears at MOMA in New York.

Higueras' significant works include: the Spanish Pavilion located in New York City (1963), a multi-purpose building for Montecarlo (1969), the La Macarrona Residence in Somosaguas, Madrid (1971-1976), the Fierro House in Marbella (1971), the Castellana at number 266 Paseo de la Castellana in Madrid and Sede del Instituto del Patrimonio Historico Espanol. He also designed the Museo de Antonio Lopez Torres, in Tomelloso, Ciudad Real.