| Isaac Wilbour | |
| State1: | Rhode Island |
| District1: | At-large |
| Term Start1: | March 4, 1807 |
| Term End1: | March 3, 1809 |
| Preceded1: | Joseph Stanton, Jr. |
| Succeeded1: | Elisha Reynolds Potter |
| Order2: | 6th |
| Office2: | Governor of Rhode Island |
| Term Start2: | May 7, 1806 |
| Term End2: | May 6, 1807 |
| Lieutenant2: | Himself |
| Predecessor2: | Henry Smith |
| Successor2: | James Fenner |
| Order3: | 4th |
| Office3: | Lieutenant Governor of Rhode Island |
| Term Start3: | 1806 |
| Term End3: | 1807 |
| Governor3: | Himself |
| Predecessor3: | Paul Mumford |
| Successor3: | Constant Taber |
| Term Start4: | 1810 |
| Term End4: | 1811 |
| Governor4: | James Fenner |
| Predecessor4: | Simeon Martin |
| Successor4: | Simeon Martin |
| Order5: | 34th |
| Office5: | Chief Justice of the Rhode Island Supreme Court |
| Term Start5: | 1819 |
| Term End5: | 1827 |
| Predecessor5: | James Fenner |
| Successor5: | Samuel Eddy |
| Birth Date: | 25 April 1763 |
| Birth Place: | Little Compton, Colony of Rhode Island, British America |
| Death Place: | Little Compton, Rhode Island, U.S. |
| Resting Place: | Seaconnet Cemetery |
| Party: | Democratic-Republican |
Isaac Wilbour (April 25, 1763October 4, 1837) was an American politician from Rhode Island holding several offices, including the sixth Governor of the state.
Wilbour was born in Little Compton in the Colony of Rhode Island and Providence Plantations. He served in the state legislature in 1805 and 1806. From October 1805 to May 1806 he served as speaker. He was Lieutenant Governor from 1806 to 1807. There had been no winner in the gubernatorial election in 1806, so he was Acting Governor from May 7, 1806, to May 6, 1807.
Wilbour represented Rhode Island in the United States House of Representatives as a Democratic-Republican from 1807 to 1809. He ran again in 1808 and 1812 but lost both times. He served as Lieutenant Governor again from 1810 to 1811.
In May 1818 he became an associate justice of the Supreme Court of Rhode Island and acted as Chief Justice of that court from May 1819 to May 1827.[1]
Wilbour died in Little Compton, Rhode Island, and his remains were buried in the Seaconnet Cemetery.