Gaviota niobrara is an extinct species of gull that lived during the Miocene.

[1] The genus name Gaviota derives from the Spanish word for gull.

[2] The species name niobrara derives from the Ponca language, referring to the Niobrara River, along which the type specimen was found in Cherry County, Nebraska.

[1] These characteristics resemble those of Scolopacidae, suggesting a closer relation between gulls and sandpipers in the Miocene.

[1] The humerus size of Gaviota niobrara is similar to that of the glaucous gull (Larus hyperboreus).