Roswell () is a city in, and the seat of, Chaves County in the U.S. state of New Mexico. Chaves County forms the entirety of the Roswell micropolitan area. As of the 2010 census it had a population of 48,411, making it the fifth-largest city in New Mexico. It is home of the New Mexico Military Institute (NMMI), founded in 1891. The city is also the location of an Eastern New Mexico University campus. Bitter Lake National Wildlife Refuge is located a few miles northeast of the city on the Pecos River. Bottomless Lakes State Park is located 12 miles (19 km) east of Roswell on US 380.
The Roswell UFO incident was named after the town, though the crash site of the alleged UFO was some 75 miles (121 km) from Roswell and closer to Corona. The investigation and debris recovery was handled by the local Roswell Army Air Field. In the 1930s, Roswell was a site for much of Robert H. Goddard's early rocketry work.