William Strong (1763 – January 28, 1840) was a congressman and judge from Vermont.
Strong was born in Lebanon, Connecticut in 1763, and moved with his parents to Hartford, Vermont, the following year. Strong was self-educated and was engaged extensively in land surveying. He was a member of the Vermont House of Representatives in 1798, 1799, 1801, and 1802, and was the sheriff of Windsor County from 1802 to 1810.
Strong was elected as a Democratic-Republican US Representative to the Twelfth and Thirteenth Congresses, from March 4, 1811 until March 3, 1815.
Strong returned to Vermont politics to sit once more in the state House of Representatives from 1815 until 1818, and as a judge of the supreme court of Windsor County from 1819 until 1821. He was then elected to the Sixteenth Congress, from March 4, 1819 until March 3, 1821. Strong died in Hartford on January 28, 1840, and was interred in Quechee Cemetery.