Troy is an unincorporated community in Wallowa County, Oregon, United States at the confluence of the Grande Ronde and Wenaha rivers. Troy is west of Flora on Oregon Route 3 near the Washington state line. It is known for its excellent steelhead fishing, and has an RV park and two fishing lodges, several Airbnbs, as well as a resort and a restaurant. The only other service is a public elementary school.

Troy began to form in the late 1890s, with the establishment in the area of a Mormon settlement called Nauvoo named after the more famous settlement in Illinois.^{[citation needed]} A post office was opened in 1902, and a formal town was platted in 1910. In 1931, the name of the town was officially changed to Troy, presumably honoring a son of the area's original Mormon settlers, Troy Grinstead. A ferry may have already been serving the Grande Ronde River at the location.^[1] The town was always a service center for the surrounding farms and ranches, and a "fisherman's getaway paradise" in its relative isolation and lack of commercial enterprise.^{[citation needed]}

With the arisal of the "urban drift" in the 1960s, the small town's population dwindled, services which could also be found in nearby Flora closed. The closure of the post office in 1965 reduced the town to its present status as a fishing, hunting, vacation site, with permanent residents estimated at 25 people.