Newton Stewart (Gd: Baile Ùr nan Stiùbhartach) is a former burgh town in the historical county of Wigtownshire in Dumfries and Galloway, southwest Scotland.

The "New Town of Stewart" was granted burgh status by charter from King Charles II, allowing a weekly market and two annual fairs to be held.

It was on a pilgrimage to the shrine of St Ninian at Whithorn in 1329 that Robert the Bruce forded the river where the present bridge stands.

Public transport in and around the town and to places in South Ayrshire and Dumfries & Galloway is mainly provided by Stagecoach Western.

[15] Newton Stewart FC, nicknamed the "Creesiders", play in the South of Scotland league, their ground is called Blairmount Park.