Siloam is an unincorporated community in southeastern Surry County, North Carolina, United States. The Yadkin River makes up the community's southern border, and the Ararat River flows between it and the community of Shoals to the east. It is a Piedmont Triad community.
The population of the ZIP Code Tabulation Area (ZCTA) for Siloam's ZIP code (27047) was 1,233 at the 2000 census.
The community grew around Siloam Methodist Church, which was established in 1818. The church was named for the biblical Pool of Siloam.
A post office was established in Siloam in 1837.
The area began a period of growth in 1890 when it became a stop on the former Southern Railway. The Yadkin Valley Railroad, which runs just north of the Yadkin in Surry County, now uses the tracks.
The Samuel Josiah Atkinson House, C. C. Cundiff House, and Marion House and Marion Brothers Store are listed on the National Register of Historic Places.
Four people were killed and 16 people injured when the one-lane steel span bridge connecting Yadkin and Surry counties in Siloam collapsed on February 23, 1975. The collapse brought national attention to bridge safety and was reported in national magazines, including Reader's Digest, and on The CBS Evening News.