Newbridge, Ontario is a ghost town in southern Ontario that was inhabited from the mid-1800s until the early 1900s. The town was established in 1854 as Spencetown on a 500-acre plot of land purchased by William Spence, John Higgins and James Kerr. It was located near the Maitland River watershed, six miles west of what is today Listowel, in the Howick Township area of Huron County.

Charles Ferrand, of Quebec, launched the first grist and flour mills, and James Carson opened the first store, which housed the post office founded by William McLaughlin. The establishment of the post office prompted the name change to Newbridge as a Spencetown post office already existed. Newburg grew to include a church, school, general store, blacksmith and an Orange Lodge, reaching a population of 200 by 1882.

The development of the Toronto Grey and Bruce Railway passing north through Fordwich hurt the town, leading people to relocate to more active rail towns and in 1922 many of the buildings that remained were destroyed by fire.