Pennoyer may refer to:
People with the surname Albert Pennoyer (1888-1957), artist and member of the Monuments Men Paul Pennoyer Jr. (1920-2010), American lawyer and Navy veteran Paul Pennoyer Sr. (1890-1971), American lawyer and diplomat Peter Pennoyer (born 1957), American architect Robert Morgan Pennoyer (1925-2023), American lawyer and author Sylvester Pennoyer (1831–1902), American politician William Pennoyer (1603–1670), British businessman and philanthropist
Other Pennoyer v. Neff, US legal case. Pennoyer School District 79
See also Pennoyer (surname)