Newbold is a town in Oneida County, Wisconsin, United States.

Tom Doyle Lake and the unincorporated communities of McNaughton and Newbold are located in the town.

There were 2,074 housing units at an average density of 26.2 per square mile (10.1/km2).

20.0% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older.

The Rhinelander-Oneida County Airport (KRHI) serves Newbold, the county and surrounding communities with both scheduled commercial jet service and general aviation services.