PNA Thompson (GC-26) is a Mantilla-class patrol boat of the Argentine Naval Prefecture, built at the Empresa Nacional Bazán shipyards and commissioned in 1983. The vessel is named after Martín Jacobo Thompson, an Argentine naval officer during the Independence War, and first Harbourmaster of Buenos Aires; she is the first PNA ship with this name.

Mantilla-class patrol vessels are offshore patrol vessels in use by the Argentine Coast Guard since 1983.