Charles Arnt (August 20, 1906 – August 6, 1990) was an American film actor from 1933 to 1962.

Arnt was born in Michigan City, Indiana, the son of a banker. He graduated from Phillips Academy and Princeton University. While at Princeton, he helped to found the University Playes and was president of the Princeton Triangle Club theatrical troupe. He became a banker after he graduated from college.

In the early 1930s, Arnt acted with the University Repertory Theater in Maryland. On Broadway, he appeared in Carry Nation (1932), Three Waltzes (1937), and Knickerbocker Holiday (1938).

Arnt appeared as a character actor in more than 200 films.

In 1962, Arnt retired from acting and began to import and breed Charolais cattle on a ranch in Washington state.

Arnt died in Orcas Island, Washington from pancreatic and liver cancer. He was survived by his wife, two sons, a daughter, and four grandchildren.