The Grajaú class is a class of patrol boats of the Brazilian Navy.

Grajaú was the first of twelve Grajaú-class patrol boats ordered by the Brazilian Navy in September 1990.

Grajaú was launched on 21 May 1993, and was commissioned on 1 December 1993.

[1] In June 2009, NPa Grajaú participated in the recovery mission of the wreckage of Air France Flight 447.