Theodore Howard McCaleb (February 10, 1810 – April 29, 1864) was a United States federal judge.
Born in Claiborne County, Mississippi, McCaleb attended Yale College, and read law to enter the Bar in 1832. He was in private practice in New Orleans, Louisiana from 1832 to 1841.
On September 1, 1841, McCaleb was nominated by President John Tyler to a joint seat on the United States District Court for the Western District of Louisiana and the United States District Court for the Eastern District of Louisiana, both vacated by Philip K. Lawrence. McCaleb was confirmed by the United States Senate on September 3, 1841, and received his commission the same day. On February 13, 1845, the two District Courts were consolidated into a single United States District Court for the District of Louisiana, and McCaleb was reassigned by operation of law to serve in the consolidated district. The districts were redivided on March 3, 1849, and McCaleb was again reassigned, this time to only the Eastern District of Louisiana. He resigned on January 28, 1861, with Louisiana's secession from the Union.
In addition to his judicial service, McCaleb was a professor at the University of Louisiana (now Tulane) from 1847 to 1864, serving as Dean of faculty there from 1850 to 1862. Following his resignation from the court, he was in private practice in New Orleans from 1861 until his death in 1864, in Claiborne County, Mississippi.