The name Chet is an English diminutive form of the name Chester, which originated from the Latin name Castrum, meaning "fort" or "camp." The name Chester was derived from the Old English ceaster, which came from the Latin word castra, also meaning "fort" or "camp." This name was initially given to people who lived near or worked at a Roman fort or military camp.

The earliest recorded use of the name Chet dates back to the 19th century in England and the United States. One of the earliest known bearers of the name Chet was Chet Atkins, an American guitarist, and record producer, born in 1924. He was known for his influential fingerstyle guitar technique and contributions to the country music genre.

Another notable figure with the name Chet was Chet Baker, an American jazz trumpeter, and vocalist, born in 1929. He was a key figure in the West Coast jazz scene and is remembered for his distinctive singing style and trumpet playing.

In the world of literature, Chet Baker was the name of a fictional character in the crime novel series by Robert B. Parker, featuring the private detective Spenser. The character of Chet Baker was Spenser's friend and a former boxer.

Chet Huntley, an American television journalist and news anchor, was born in 1911. He was best known for co-anchoring the NBC's evening news program, The Huntley-Brinkley Report, alongside David Brinkley from 1956 to 1970.

Chet Raymo, born in 1936, is an American writer and professor of physics and astronomy. He is known for his popular science books and essays, which explore the intersection of science and spirituality.

While the name Chet is not as common as it once was, it has left an indelible mark on various fields, including music, literature, journalism, and academia, reflecting its rich historical roots and the diverse individuals who have borne this name.