| Clesson J. Blaisdell | |
| Office: | 122nd President of the New Hampshire State Senate |
| Succeeded: | William Lynch |
| State Senate2: | New Hampshire |
| State2: | New Hampshire |
| District2: | 10th |
| Term End2: | August 26, 1999 |
| Succeeded2: | Thomas R. Eaton |
| Birth Date: | September 28, 1926 |
| Birth Place: | Keene, New Hampshire |
| Death Date: | August 26, 1999 |
| Death Place: | Lebanon, New Hampshire |
| Profession: | Merchant |
| Nickname: | Junie |
| Party: | Democrat |
| Branch: | United States Navy |
| Serviceyears: | 1944–1946 |
| Battles: | World War II |
Clesson J. Blaisdell (September 28, 1926 – August 26, 1999) was a New Hampshire businessman and politician who served as a member of and President of the New Hampshire Senate.
Blaisdell had three children, Peter, Michael and Lucinda, with his wife, Beverly, known as Peggy.
Blaisdell was born to Clesson Blaisdell on September 18, 1926.
Blaisdell graduated from Keene High School.
From 1944 to 1946, during World War II, Blaisdell served in the United States Navy in the Asiatic/Pacific theater.
Blaisdell was elected to the New Hampshire Senate fifteen times, and in his fifteenth term he was chosen as the 123rd President of that body. Blaisdell was the first Democrat to be elected President of the state senate since 1912.
Blaisdell owned and operated a sporting goods store in Keene.
Blaisdell died at the Dartmouth–Hitchcock Medical Center in Lebanon, New Hampshire.