Arthur Loomis (January 28, 1859 – January 8, 1935) was an architect who worked from 1876 through the 1920s in the Louisville, Kentucky area. After working for noted architect Charles J. Clarke for several years, they became partners in 1891, creating Clarke & Loomis, one of Louisville's most prestigious architectural firms. After Clarke's death in 1908, Loomis struck out on his own.