Leonard Wilcox (January 29, 1799 – June 18, 1850) was an American lawyer, judge and politician.

[2] He graduated from Dartmouth College in 1817 and was a member of Phi Beta Kappa society.

[7] Appointed by Governor Page as a Democrat to the United States Senate to fill the vacancy caused by the resignation of Franklin Pierce, Wilcox was subsequently elected and served from March 1, 1842 to March 3, 1843.

[10] Wilcox died in Orford, Grafton County, New Hampshire, on June 18, 1850 (age 51 years, 140 days).

[12] Following Almira's death, Wilcox married Mary Mann on October 10, 1833.