Isaac W. Bishop (born c. 1804) was an American lawyer and politician from New York.
In 1836, he and State Senator John C. Kemble were accused of corrupt and fraudulent stock trading.
On May 23, Young and State Senator Myndert Van Schaick resigned their seats stating they would not sit together with persons who found Bishop "guilty of moral and official misconduct," and then refused to expel him.
He was a presidential elector in 1852, voting for Franklin Pierce and William R. King.
Seward there was strong personal friendship, not withstanding their political differences".