Siloam Springs is a city in Benton County, Arkansas, United States. The city shares a border on the Arkansas-Oklahoma state line with West Siloam Springs, Oklahoma, which is within Cherokee Nation territory. The town was founded in 1882 and was characterized by the purported healing powers of the spring water feeding Sager Creek and trading with nearby Native American tribes. John Brown University (JBU) was founded in 1919 as a private, interdenominational, Christian liberal arts college in Siloam Springs. Today, Siloam Springs is known for its efforts to preserve and revitalize the city's historic downtown and as a promoter of the arts via Sager Creek Arts Center and the JBU art gallery. The community is located on the western edge of the growing Northwest Arkansas metropolitan area and has seen a population increase of 47% to 15,039 between the 2000 and 2010 censuses.

In 2012, the city was named one of the 20 best small towns in America by Smithsonian magazine.

The area is located in the region of the country where the southern plains meet the Ozark Mountains. The city sits atop a plateau with many dogwood trees growing across the landscape. Siloam Springs is made up of Siloam Springs, Arkansas, and West Siloam Springs, Oklahoma. The latter is in the territory of the Cherokee Nation in northeastern Oklahoma.

A perennial creek, named after the founder, Sager Creek, flows through the downtown area.

According to the United States Census Bureau, the city has a total area of 11.2 square miles (28.9 km2), of which 11.1 square miles (28.7 km2) is land and 0.077 square miles (0.2 km2), or 0.71%, is water.