David Hillis (1785 – July 8, 1845) was an American politician who served as the seventh Lieutenant Governor of Indiana from 1837 to 1840.
He settled in Indiana and served in the War of 1812 as a lieutenant in a mounted ranger company under Captain Williamson Dunn.
In 1832, Hillis ran for a seat in the Indiana Senate, defeating Williamson Dunn, the former captain of the ranger company Hillis served in.
In 1837, Indiana Democrats tried to encourage Hillis to run against David Wallace for the Whig nomination in the race.
After being elected to the office of Lieutenant Governor, Hillis resigned his seat in the Senate and was succeeded by Dunn.