The Suwannee bass (Micropterus notius) is a species of freshwater fish in the sunfish family (Centrarchidae) of order Centrarchiformes.

The Suwannee bass is a rather small species compared to its congeners and has a deep body with a large mouth in which the maxilla is placed beneath the eye and there is a circular patch of teeth on the tongue.

They are uncommon in the lower parts of the Suwannee River where there is a tidal influence, but are absent from the upper reaches which are dominated by acidic waters draining from the Okefenokee Swamp.

The spawning season runs from February to May, peaking in April and May, when the water temperature reaches 18–19 °C (64–66 °F) The eggs are laid in circular depressions excavated near the edges of the streams where they are fertilised by the male.

[2] The Suwannee bass was first formally described by Reeve Maclaren Bailey and Carl Leavitt Hubbs in 1949 with the type locality given as Head of Ichetucknee Springs at Lead, Columbia County, Florida.