The Negro Masonic Hall in St. Louis, Missouri (also known as the Prince Hall Grand Lodge #2) was a historic building built in 1886. Originally constructed as a commercial building, it was purchased by the Most Worshipful Prince Hall Grand Lodge of Missouri (a Masonic Grand Lodge) in 1909 and remodeled as a meeting hall. While the Grand Lodge itself moved to a new location in 1951, several of its subordinate lodges continued to meet in the building until the 1986s. At this point the building was abandoned and deteriorated.