The Lutheran Theological Seminary at Philadelphia (LTSP) was one of eight theological seminaries associated with the Evangelical Lutheran Church in America, the largest Lutheran denomination in North America. It is located on Germantown Avenue in the Mount Airy neighborhood of northwestern Philadelphia. Founded in 1864, it has its roots in the Pennsylvania Ministerium established in 1748 in Philadelphia by Henry Melchior Muhlenberg.

Franklin Clark Fry was a leading American Lutheran clergyman, known for his work on behalf of interdenominational unity.