A past master is one who is highly skilled in a particular field or activity.
Past Master(s) may also refer to:
Past Master (novel), a novel by R. A. Lafferty The Past-Master, a 1970 Bulgarian film Past Masters, a Beatles compilation album Past Master, a type of Masonic lodge officer Pastmaster, a villain in SWAT Kats: The Radical Squadron InteLex Past Masters, a collection of scholarly editions of classic works