Plymouth Friends Meetinghouse is a historic Quaker meeting house at the corner of Germantown and Butler Pikes in Plymouth Meeting, Montgomery County, Pennsylvania. It was built in 1708, and is constructed of native limestone. A wing was added in 1780, and the interior was rebuilt in 1867 after a fire. The porch was also added in 1867, and a rear wing added in 1945. During the American Revolutionary War, the building was used as a hospital for George Washington's troops and known as the "Camp at Plymouth Meeting House." The meeting house was a hub of activity on the Underground Railroad and Lucretia Mott is known to have attended a meeting here. Noted artist Thomas Hovenden (1840-1895) is buried in the adjacent cemetery. Plymouth Meeting Friend School is under the care of the meeting and is located on site.
It was added to the National Register of Historic Places in 1971. It is located in the Plymouth Meeting Historic District.
William Jeanes Memorial Library (1935), built on the grounds of the meetinghouse.