Peter Francis "Pete" Flaherty (June 25, 1924 – April 18, 2005) was an American politician from Pittsburgh, Pennsylvania.He served as Assistant District Attorney of Allegheny County, Pennsylvania from 1957 to 1964; a City of Pittsburgh Councilman 1966 to 1970; Democratic mayor of Pittsburgh from 1970 to 1977; United States Deputy Attorney General during the Carter administration from 1977 to 1978, and County Commissioner of Allegheny County from 1984 to 1996.Flaherty was born and raised on Pittsburgh's North Side.