| Isaac Leet | |
| State: | Pennsylvania |
| District: | 21st |
| Term Start: | March 4, 1839 |
| Term End: | March 3, 1841 |
| Preceded: | Thomas M. T. McKennan |
| Succeeded: | Joseph Lawrence |
| Office2: | Member of the Pennsylvania Senate for the 20th district |
| Term Start2: | 1833 |
| Term End2: | 1836 |
| Preceded2: | Jonathan Knight |
| Succeeded2: | John James Pearson |
| Office3: | Member of the Pennsylvania Senate for the 17th district |
| Term Start3: | 1837 |
| Term End3: | 1838 |
| Preceded3: | George McCulloch |
| Succeeded3: | John Hoge Ewing |
| Birth Date: | 1801 |
| Birth Place: | Washington, Pennsylvania, US |
| Death Place: | Washington, Pennsylvania, US |
| Party: | Democratic |
| Alma Mater: | Washington College |
Isaac Leet (1801June 10, 1844) was an American politician from Pennsylvania who served as a Democratic member of the U.S. House of Representatives for Pennsylvania's 21st congressional district from 1839 to 1841.
Isaac Leet was born near Washington, Pennsylvania. He graduated from Washington College (now Washington & Jefferson College) in Washington, Pennsylvania, in 1822. He studied law under Thomas McKean Thompson McKennan[1] was admitted to the bar in 1826 and commenced practice in Washington, Pennsylvania. He served as treasurer of Washington County, Pennsylvania, from 1826 to 1830. He was deputy attorney general of Washington County from 1830 to 1834, and was a member of the Pennsylvania State Senate for the 20th district from 1833 to 1836 and the 17th district from 1837 to 1838.[2]
Leet was elected as a Democrat to the Twenty-sixth Congress. He was an unsuccessful candidate for reelection in 1840 to the Twenty-seventh Congress. He died in Washington in 1844.
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