Carmel Monon Depot, also known as Monon Depot Museum, is a historic train station located at Carmel, Hamilton County, Indiana. It was built in 1883 by the Monon Railroad, and is a one-story, rectangular frame building measuring 45 by 18 feet (13.7 by 5.5 m). It has a gable roof with wide overhanging eaves. It originally served as a passenger station and freight depot until services were discontinued in 1961 and 1974, respectively. It was moved to its present location in 1980, and in 1981 a 20-by-18-foot (6.1 by 5.5 m) addition was constructed. The building was subsequently renovated and houses a local history museum.