Mannix is an American detective television series that ran from 1967 to 1975 on CBS. It was created by Richard Levinson and William Link, and developed by executive producer Bruce Geller. The title character, Joe Mannix, is a private investigator played by actor Mike Connors.

A private investigator, a private detective, or inquiry agent is a person who can be hired by individuals or groups to undertake investigatory law services. Private investigators often work for attorneys in civil and criminal cases.