Peter Ihrie Jr. (February 3, 1796 – March 29, 1871) was a Jacksonian member of the U.S. House of Representatives from Pennsylvania.
He studied law, was admitted to the bar in 1818 and commenced practice in Easton.
He was a charter member of the board of trustees of Lafayette College in 1826.
He served as a member of the Pennsylvania House of Representatives in 1826 and 1827.
Ihrie was elected as a Jacksonian candidate to the Twenty-first Congress to fill in part the vacancies caused by the resignations of George Wolf and Samuel D. Ingham.