This is a list of mayors of Princeton in Indiana, United States. As of 2006, there have been 31 mayors of the city of Princeton, Indiana.
From 1884 to 1906 mayors were elected for two-year terms; mayors listed during that timespan whose terms are given as more than two years were simply elected to successive terms. From 1906 on mayors were elected to four-year terms (with the exceptions of Dr. Osborne T. Brazelton and Dr. Joseph G. Pepple, who were both elected to a five-year term); any mayor listed during that timespan whose term is given as more than four years was elected to successive terms.