Thomas H. McCalla was the nineteenth intendant (mayor) of Charleston, South Carolina, serving two consecutive terms from 1810 to 1812.In addition to being a medical doctor, McCalla was an officer with the Vigilant Fire Insurance Company. McCalla declined to run for a position in the South Carolina State House in 1802.He was elected on September 17, 1810, to be intendant of Charleston. He was re-elected in September 1811 for his second term.