David Plant (March 29, 1783 – October 18, 1851) was a United States Representative from Connecticut. Born in Stratford, Connecticut, Plant attended the Episcopal Academy in Cheshire, Connecticut, and graduated from Yale College in 1804. He studied law at the Litchfield Law School and was admitted to the bar in 1804. Plant practiced law in Stratford and became a judge of the probate court of Fairfield County.
Plant was a member of the Connecticut House of Representatives from 1817 to 1820 and served as its speaker. He was a Connecticut state senator in 1821 and 1822. The following year he became Lieutenant Governor of Connecticut, a position he held until 1827.
That year he was elected as a Member of the U.S. House of Representatives of the Twentieth Congress, which was in session from March 4, 1827 until March 3, 1829. He did not seek re-election in 1828, but returned to his law practice in Connecticut David Plant died in Stratford in 1851 and was buried in the Congregational Burying Ground.