James Sweeney (1868-1919) was an American architect practicing in New London, Connecticut.
After an education at the Bulkeley School, he worked for the New London water department, where he learned the essentials of drafting and civil engineering.
[1] Circa 1888 he began working for George Warren Cole, representative in New London of the Boston firm of Shepley, Rutan & Coolidge, and worked on projects such as the New London Public Library and the Williams Memorial Institute (both 1889–91).
In 1891, when Cole established an independent office in New London, he made Sweeney his chief assistant.
Sweeney was a private practitioner for his entire professional career, and continued to work until his death in 1919.