Peter Edward Costello (June 27, 1854 – October 23, 1935) was a Republican member of the United States House of Representatives for Pennsylvania.

Peter Costello was born in Boston.

He engaged in various manufacturing industries and general construction work and real estate development.

He was elected as a Republican to the Sixty-fourth, Sixty-fifth, and Sixty-sixth Congresses.

Costello continued in the real-estate and investment brokerage business in Philadelphia until his death.