Agness is an unincorporated community in Curry County, Oregon, United States. It is near the confluence of two Wild and Scenic rivers—the Lower Rogue and the Illinois. Agness post office was established October 16, 1897. It was named after Agnes, the daughter of the first postmaster, and subsequently misspelled. The Agness area is popular for fishing and hiking. Agness is in the Rogue River–Siskiyou National Forest and was threatened by the Biscuit Fire in 2002.