Orville H. Platt | |
|---|---|
 | |
| United States Senator from Connecticut | |
| In office March 4, 1879 – April 21, 1905 | |
| Preceded by | William H. Barnum |
| Succeeded by | Frank B. Brandegee |
| Secretary of State of Connecticut | |
| In office 1857–1858 | |
| Governor | James Pollock |
| Preceded by | Nehemiah D. Sperry |
| Succeeded by | John Boyd |
| Member of the Connecticut House of Representatives | |
| In office 1864 1869 | |
| Personal details | |
| Born | Orville Hitchcock Platt July 19, 1827 Washington, Connecticut |
| Died | April 21, 1905 (aged 77) Washington, Connecticut |
| Nationality | American |
| Political party | Republican |
| Signature | .png){kind=small} |
Orville Hitchcock Platt (July 19, 1827 – April 21, 1905) was a United States senator from Connecticut. Platt was a prominent conservative Republican and by the 1890s he became one of the "big four" key Republicans who largely controlled the major decisions of the Senate, along with William B. Allison of Iowa, John Coit Spooner of Wisconsin and Nelson W. Aldrich of Rhode Island.