John Christian Luning (December 21, 1863 – September 28, 1928) is a former Mayor of the town of Leesburg, Florida during the 1890s and Lake County Commissioner. He would go on to serve the shortest term as Florida's Commissioner of Agriculture for 14 days before going on to serve as State Treasurer of Florida. He was part of a group of Florida leaders known as the "Three Musketeers" - along with James B.