Peter Richard Nagle (born 23 March 1946) is an Australian politician.
He was a Labor Party member of the New South Wales Legislative Assembly from 1988 to 2001, representing the electorate of Auburn.
He worked variously as a lawyer, union official and TAFE teacher before entering politics.
He also served a stint in the Army Reserve from 1962 to 1967, and was elected to the Auburn Council from 1970 to 1976.
He was re-elected in 1991, 1995 and 1999, before retiring mid-term in 2001, resulting in a by-election that was won by Labor candidate Barbara Perry.