| Thomas Cleland Dawson | |
| Order: | 7th United States Ambassador to the Dominican Republic |
| Term Start: | July 23, 1904 |
| Term End: | May 5, 1907 |
| Predecessor: | William F. Powell |
| Successor: | Fenton R. McCreery |
| Order2: | 8th United States Ambassador to Colombia |
| Term Start2: | October 16, 1907 |
| Term End2: | April 25, 1909 |
| Predecessor2: | John Barrett |
| Successor2: | Elliott Northcott |
| Order3: | 24th United States Ambassador to Chile |
| Term Start3: | August 20, 1909 |
| Term End3: | November 16, 1909 |
| Predecessor3: | John Hicks |
| Successor3: | Henry P. Fletcher |
| Order4: | 6th United States Ambassador to Panama |
| Term Start4: | September 24, 1910 |
| Term End4: | December 1, 1910 |
| Predecessor4: | R. S. Reynolds Hitt |
| Successor4: | Henry Percival Dodge |
| Birth Date: | 30 July 1865 |
| Birth Place: | Hudson, Wisconsin |
Thomas Cleland Dawson (July 30, 1865 - May 1, 1912) was a career United States diplomat.
Born in Hudson, Wisconsin, Dawson received his bachelor's degree from Hanover College and his law degree from University of Cincinnati College of Law. He also studied at Harvard University. Dawson practiced law in Des Moines, Iowa and Council Bluffs, Iowa and was an assistant Iowa Attorney General. He was also a newspaper publisher. Dawson entered the diplomatic service in 1891, when he was appointed Secretary of Legation in Brazil. He was U.S. minister and consul general to the Dominican Republic (1904‑1907), during which term he negotiated the American-Dominican Fiscal Convention of 1907; then ambassador to Colombia (1907‑1909), Chile (1909), and Panama (1910). He is the author of The South American Republics (2 vols., 1903 and 1904).[1] [2]