Joseph Calm Griffith Kennedy (April 1, 1813 – July 13, 1887) of Pennsylvania, was a 19th-century Whig politician, lawyer and journalist who was appointed to supervise the United States Censuses for 1850 and 1860.

A small group of Kennedy's papers are held in the Walter Willcox Collection, Library of Congress.

However, by the time the 1860 census returns were ready for tabulation, the United States was moving toward the American Civil War.

As a result, Superintendent Kennedy and his staff produced only an abbreviated set of reports, which included no graphic or cartographic representations.

As the war began, however, Kennedy and the Census staff used the new statistics to produce maps of Southern states for Union field commanders.