Chubutinectes (meaning "Chubut swimmer") is an extinct genus of elasmosaurid plesiosaur from the Late Cretaceous La Colonia Formation of Argentina.

[1] The Chubutinectes holotype specimen, MPEF-PV 5232, was discovered in 2009 within sediments of the La Colonia Formation on the Somún Curá plateau in Chubut Province, Argentina.

The generic name, "Chubutinectes", combines a reference to the Argentinean province "Chubut", where the holotype was found, with the Greek word "nectes", meaning "swimmer".

[1] The holotype of Chubutinectes is an osteologically immature specimen with a dorsal region measuring 1.4 m (4.6 ft) long, indicating that it was larger than an adult Kawanectes from the same formation.

[1][3] Dinosaur fossils, including those of the abelisaurid theropods Carnotaurus and Koleken, titanosaurian sauropod Titanomachya, ankylosaurs, hadrosauroids, and somphospondylans, have also been found.