| Aalto, Hugo Alvar Henrik (1898-1976) |
| Abercrombie, Patrick (1880-1957) |
| Adam, Robert (1728-1792) |
| Adams, Harold Francis (1869-1934) |
| Adelsohn, Edward M. (1890-1930) |
| Adler, Dankmar (1844-1900) |
| Ahlschlager, Frederick (1858-1905) |
| Aiken, William Martin (1855-1908) |
| Albini, Franco (1905-1977) |
| Albro, Louis Colt (1876-1924) |
| Alden, Frank E. (1859-1908) |
| Aldrich, Chester Holmes (1871-1940) |
| Allen, Austin (1860-1917) |
| Allen. Frank P. (1857-1934) |
| Allen, Francis R. (1844-1931) |
| Allen, Jerome R. (1871-1928) |
| Alston, John M. (1823-1910) |
| Anderson, George (1869-1916) |
| Tadao Ando (b.1941) |
| Andrews, Robert D. (1857-1929) |
| Armstrong, William T.L. (1881-1934) |
| Ashford, Snowden (1866-1927) |
| Aspinwall, J. Lawrence (1854-1936) |
| Asplund, Erik Gunnar (1885 - 1940) |
| Atchison, John D. (1870-1935) |
| Audsley, George A. (1839-1925) |
| Aves, Edward L. (1848-1925) |