William G. Donnan | |
|---|---|
 | |
| Member of the Iowa Senate | |
| In office 1868–1870 | |
| In office 1884–1886 | |
| Member of the U.S. House of Representatives from Iowa's 3rd district | |
| In office March 4, 1871 – March 3, 1875 | |
| Preceded by | William B. Allison |
| Succeeded by | Lucien Lester Ainsworth |
| Personal details | |
| Born | William G. Donnan June 30, 1834 Charlton, New York, U.S. |
| Died | December 4, 1908 (aged 74) Independence, Iowa, U.S. |
| Political party | Republican |
| Alma mater | Union College |
| Profession | Politician, Lawyer |
| Military service | |
| Allegiance |  United States |
| Branch/service |  United States Army |
| Rank |  Private |
| Battles/wars | American Civil War |
William G. Donnan (June 30, 1834 – December 4, 1908) was an American lawyer, Civil War officer, politician who served as a two-term Republican U.S. Representative from Iowa's 3rd congressional district.