Trigonopterus pauxillus is a species of flightless weevil in the genus Trigonopterus from Indonesia.
The specific name is derived from the Latin word pauxillus, meaning "small". It refers to the species small size.
Individuals measure 1.65–2.01 mm in length. General coloration black, with rust-colored tarsi and antennae.
The species is found around elevations of 1,280–1,490 metres (4,200–4,890 ft) around Batu Dulang and Tepal on the island of Sumbawa, part of the Indonesian province of West Nusa Tenggara.
T. pauxillus is part of the T. relictus species group.