Walter Mann Mumma (November 20, 1890 – February 25, 1961) was a Republican member of the U.S. House of Representatives from Pennsylvania.

He graduated from the Pennsylvania State Forestry Academy in Mont Alto in 1911.

Mumma worked with the sales department of the Lehigh Portland Cement Company in Allentown, Pennsylvania from 1916 to 1921.

Mumma was elected as a Republican to the Eighty-second and to the five succeeding Congresses and served from January 1951 until his death in Bethesda, Maryland.

Mumma voted in favor of the Civil Rights Acts of 1957 and 1960.