Carter County Museum, Paleontology museum in Ekalaka, Montana, United States.

Carter County Museum is a paleontology museum in Ekalaka displaying fossil specimens discovered during local excavations. The building houses a complete Edmontosaurus skeleton, several Triceratops skulls, and other prehistoric remains from the Cretaceous period.

The Carter County Museum was founded in 1936 and is the first county museum in Montana. Its dinosaur fossils, including one of the most complete Edmontosaurus annectens skeletons and a complete Triceratops skull, were largely collected on private land in the 1930s and 1940s. The museum is one of several on the Montana Dinosaur Trail.

The museum's local-history displays cover ranch and homestead life, with old equipment from early Ekalaka and photographs of towns that disappeared in the past century. A veterans' room documents people from the area who went to war since Carter County was founded in 1917. Each July the Dino Shindig brings lectures, kids' activities and field expeditions.

The museum is open year-round except on federal holidays, with seasonal hours that change between winter and summer months. Visitors should check seasonal schedules to ensure the museum is open during their planned visit.

Since 2013 the museum has held the Dino Shindig on the last weekend of July, bringing together paleontologists, dinosaur enthusiasts and local residents for lectures, children's activities, field expeditions and live music. Past speakers have included Kirk Johnson and Jack Horner, and attendees come from around the world.