| Frank D. Jackson | |
| Order1: | 15th |
| Office1: | Governor of Iowa |
| Term Start1: | January 11, 1894 |
| Term End1: | January 16, 1896 |
| Lieutenant1: | Warren S. Dungan |
| Predecessor1: | Horace Boies |
| Successor1: | Francis M. Drake |
| Office2: | Secretary of State of Iowa |
| Term Start2: | 1885 |
| Term End2: | 1891 |
| Governor2: | Buren R. Sherman William Larrabee |
| Preceded2: | John A. T. Hull |
| Succeeded2: | William M. McFarland |
| Birth Name: | Frank Darr Jackson |
| Birth Date: | 26 January 1854 |
| Birth Place: | Arcade, New York, U.S. |
| Death Place: | Redlands, California, U.S. |
| Party: | Republican |
| Spouse: | Anna F. Brock |
| Children: | 4 |
| Profession: | Lawyer |
| Alma Mater: | Iowa Agricultural College |
| Signature: | Signature of Frank Darr Jackson.png |
Frank Darr Jackson (January 26, 1854 – November 16, 1938) was an American politician who served as the 15th governor of Iowa, serving one term from 1894 to 1896.[1]
Jackson attended Iowa Agricultural College (now Iowa State University) and the University of Iowa Law School. He was admitted to the bar in 1875 and practiced law in Greene, Iowa. From 1885 to 1891, he was Iowa Secretary of State. He was elected governor as a Republican in 1893, defeating incumbent Horace Boies, but did not seek reelection after his single two-year term. Jackson resumed his position as president of the Royal Union Life Insurance Company, and then retired to California, where he died in 1938.[1]