Juan Martín Cermeño, or Zermeño[1] (Ciudad Rodrigo, Salamanca, 1700 – Barcelona, 1773) was a Spanish architect, military engineer and lieutenant general.

In 1751 Cermeño commissioned Pedro de Lucuce to make a report on how to defend the new frontier between Catalonia and France.

In September 1753, Cermeño initiated the works of Sant Ferran Castle advised in Lucuce's report in Figueras.

[1] The Captain General of Catalonia, Jaime de Guzmán y Spinola, II Marquis of la Mina,[citation needed] commissioned him to lay out a new neighborhood in Barcelona that would be called La Barceloneta, following Verboom's construction of the Citadel of Barcelona.

[8][9] The Marqués de la Mina also commissioned Cermeño with the project of the refurbishing works of the Montjuïc Castle in Barcelona.