John Christian Luning (1863 – 1928) was a mayor of the town of Leesburg, Florida, during the 1890s and Lake County Commissioner.

He was part of a group of Florida leaders known as the "Three Musketeers" – along with James B. Whitfield (a state treasurer and state attorney general before serving nearly 40 years on the Florida Supreme Court) and William V. Knott (who held various cabinet positions for nearly 40 continuous years before becoming a political appointee) – and had a bright political future before his sudden death in September 1928.

[3] Following the death of McLin, Governor Albert W. Gilchrist appointed Luning the Commissioner of Agriculture.

It is reported that Luning intended to apply to be State Comptroller but Gilchrist wanted someone experienced in the position.

Robert Andrew Gray – who would later serve 31 years as Florida Secretary of State and 31 years as on the Florida Board of Education – worked on Luning's campaign and recalled that Luning won a three-way primary by only 150 votes before going on to win the general election.