Route 725 is a 19.2-kilometre (11.9 mi) long mostly north–south secondary highway in the southwestern portion of New Brunswick, Canada. Most of the route is in Charlotte County. The route starts at a dead end at the Canada–US border northwest of . The road travels southeast through a mostly forested area to the southern terminus of Route 730 then through the communities of Upper Little Ridge, , and . The road then begins to turn east, passes , and ends in just outside Saint Stephen at the southern terminus of Route 735 and the eastern terminus of Route 740.