Jacob H. Neff | |
|---|---|
 | |
| 22nd Lieutenant Governor of California | |
| In office January 3, 1899 – January 6, 1903 | |
| Governor | Henry Gage |
| Preceded by | William T. Jeter |
| Succeeded by | Alden Anderson |
| Member of the California Senate from the 20th district | |
| In office December 4, 1871 – April 1, 1872 | |
| Preceded by | Charles Austin Tweed |
| Succeeded by | Noble Martin |
| Personal details | |
| Born | October 18, 1830 Strasburg, Pennsylvania, US |
| Died | March 26, 1909 (aged 78) San Francisco, California, US |
| Political party | Republican |
Jacob Hart Neff (October 18, 1830 – March 26, 1909) was an American politician. He served as the 22nd Lieutenant Governor of California from 1899 to 1903.