Rhadinoloricaria stewarti is a species of catfish in the family Loricariidae.

It is native to South America, where it occurs in the drainage basin of the Cononaco River, a tributary of the Napo River, in Ecuador.

[1] The species was described in 2020 as part of a redescription of the genus Rhadinoloricaria conducted by Francisco Provenzano (of the Central University of Venezuela) and Ramiro Barriga-Salazar.

[2] FishBase does not yet list this species.

This article relating to Loricariinae is a stub.