Alfred Crout Harmer (August 8, 1825 – March 6, 1900) was a Republican member of the United States House of Representatives from Pennsylvania.

Harmer was born in Germantown section of Philadelphia.

He was a delegate to the 1868 Republican National Convention.

He served until his death in 1900 and was interred in West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania.

[1] "Memorial addresses on the life and character of Alfred C. Harmer, late a representative from Pennsylvania delivered in the House of Representatives and Senate frontispiece 1901"