Arthur Loomis (January 28, 1859 – January 8, 1935) was an architect who worked from 1876 through the 1920s in Louisville, Kentucky area. Clarke & Loomis is one of the architectural firms in which he worked.
Loomis was born January 28, 1859 in Westfield, Massachusetts to Dr. John Loomis and Clarissa Loomis née Robinson. Just before the American Civil War, Dr. John Loomis moved with his family to Jeffersonville, Indiana, where they stayed until about 1910, when they moved to Louisville.
Loomis designed the Carnegie Library in Warder Park, in Jeffersonville, Indiana, from which he was a native. He also designed the Conrad-Caldwell House, a contributing property in the St. James-Belgravia Historic District in Old Louisville.
A number of buildings that Loomis or the firm designed survive and are listed on the U.S. National Register of Historic Places. These include:
- The Beaux Arts Fireproof Storage Company Warehouse in Louisville, Kentucky
- Speed Building, 319 Guthrie Green, Louisville
- Carrie Gaulbert Cox and Attilla Cox, Jr., House, 389 Mockingbird Valley Rd., Louisville (Clarke and Loomis)
- Henry Frank House, Madison Ave., Middletown, KY
- Jewish Hospital Complex, 236 E. Kennedy St., Louisville, KY
- Jones Estate, 1905 Stonegate Rd., Anchorage, Kentucky
- Levy Brothers Building, 235 W. Market St., Louisville (Clarke & Loomis)
- One or more buildings in Old Jeffersonville Historic District, roughly bounded by Court Ave., Graham St., Ohio River, & I-65, Jeffersonville, Indiana
- Shelby Park Branch Library, 600 E. Oak St., Louisville (Loomis & Hartman)
- St. Lukes Church, 1204 Maple Lane, Anchorage, Kentucky
- St. Paul's German Evangelical Church and Parish House, 213 E. Broadway, Louisville (Clarke & Loomis)
- St. Peter's German Evangelical Church, 1231 W. Jefferson St., Louisville (Clarke & Loomis)
- University of Louisville School of Medicine, 101 W. Chestnut St., Louisville (Clarke & Loomis)
- Whiteside Bakery, 1400 W. Broadway St., Louisville
- Dr. Winston's House, 11906 Ridge Rd., Anchorage, Kentucky (Clarke & Loomis)
- National Park Service (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.