The Twin Sisters are a pair of cannons used by Texas Military Forces during the Texas Revolution. They are among the most famous artillery in Texas military history with the "Come and Take It" cannon starting the revolution at the Battle of Gonzales and the Twin Sisters winning it at the Battle of San Jacinto. The Twin Sisters were also potentially used during the Mexican Invasions of 1842 and American Civil War.

The Battle of San Jacinto, fought on April 21, 1836, in present-day La Porte and Deer Park, Texas, was the final and decisive battle of the Texas Revolution. Led by General Samuel Houston, the Texan Army engaged and defeated General Antonio López de Santa Anna's Mexican army in a fight that lasted just 18 minutes. A detailed, first-hand account of the battle was written by General Houston from the headquarters of the Texan Army in San Jacinto on April 25, 1836. Numerous secondary analyses and interpretations have followed.