The Mauser–Vergueiro was a bolt-action rifle, designed in 1904 by José Alberto Vergueiro, an infantry officer of the Portuguese Army, and manufactured by Deutsche Waffen und Munitionsfabriken (DWM).

An additional 5,000 Mauser–Vergueiro rifles, chambered in 7×57mm Mauser, were produced in 1906 for Brazil's Federal Police, using leftover components from the Portuguese order and issued in the cities of Rio de Janeiro and São Paulo.

[1] In Portuguese and South African service it was used in combat in the First World War and in several colonial campaigns.

The German colonial troops in East Africa also used Mauser–Vergueiro rifles, captured from the allied forces in combat.

The Portuguese Expeditionary Corps on the Western Front used British weapons and equipment for logistical reasons, and so did not use the Vergueiro.