Pythagoras Lodge No. 41, Free and Accepted Masons, Masonic lodge in Decatur, US.

Pythagoras Lodge No. 41 is a 1924 Beaux-Arts Masonic temple in Decatur, Georgia, designed by William J. Sayward of Edwards and Sayward. The building is also known as Pythagoras Masonic Temple and Decatur Masonic Temple. It was listed on the National Register of Historic Places in 1982 for its architecture and the social history of the lodge.

The building was designed in 1924 by architect William J. Sayward, himself a lodge member, working with William A. Edwards under their firm Edwards and Sayward. It was added to the National Register of Historic Places in 1982 for its architectural quality and local social importance.

The name Pythagoras Lodge No. 41 refers to a Masonic lodge chartered in 1844 that has met continuously since then, one of several lodges in Decatur. The 1924 building, also called Pythagoras Masonic Temple or Decatur Masonic Temple, was constructed as its Masonic hall and is still used for lodge meetings.

The building stands at 33.77556, -84.29639 in Decatur, Georgia, and is listed on the National Register of Historic Places. Its Beaux Arts design by William J. Sayward dates to 1924. The lodge has met continuously since receiving its charter in 1844, so check locally for any public access before visiting.

The building is also known as Pythagoras Masonic Temple and occasionally as Decatur Masonic Temple, and the National Register listing uses the lodge's full name. The lodge itself received its charter in 1844 and has met continuously since then, so the 1924 hall replaced earlier meeting quarters.