BRM Costruções Aeronáuticas (English: BRM Aircraft Manufacturing) is a Portuguese aircraft manufacturer based in Pêro Pinheiro, Sintra.

The company specializes in the design and manufacture of ultralight aircraft in the form kits for amateur construction and ready-to-fly aircraft for the European Fédération Aéronautique Internationale microlight category.

[1] BRM's aircraft are built with aluminium sheet "all-metal" construction.

The BRM Citius is an improved model, with a higher cruise speed.

The company also produces a low-wing design, the two-seat BRM Argos.