Isaac Toucey (November 15, 1792 – July 30, 1869) was an American politician who served as a U.S. senator, U.S. Secretary of the Navy, U.S. Attorney General and the 33rd Governor of Connecticut.

During his tenure, an antibribery bill geared toward eliminating fraudulent electoral procedures was considered.

[3] In 1848, President James K. Polk appointed Toucey the 20th Attorney General of the United States, a position he held until 1849.

A moderate Northerner much in line with Buchanan's thought in the sectional controversies of the day, Toucey held that post until 1861 and the arrival of the Abraham Lincoln administration.

During that time, Toucey would undergo criticism for alleged corruption as uncovered by the Covode Committee, resulting in him being censured by the House of Representatives in June 1860.