María León Ferreiro (La Laguna, Tenerife, 1982) is an architect. She studied at the Escuela Técnica Superior de Arquitectura de Madrid (ETSAM), graduating in 2008. She began her professional career in Madrid during a particularly challenging period for the architectural sector and, in 2010, moved to the United Kingdom in search of new professional opportunities. Between 2010 and 2017, she worked as an architect in London.

In 2016, she co-founded FiveOHFive with Eduardo López Solórzano (La Rioja, 1982), an architecture and design studio based in El Toscal. The studio reflects their shared professional experience in London and is characterized by a strong focus on materiality, color, everyday details, and the privileged natural environment in which it operates, alongside a constant pursuit of the unexpected.