Twain

Twain may refer to:
 * The number 2 (dated or literary usage)

People

 * Mark Twain, pen name of American writer Samuel Langhorne Clemens (1835–1910)
 * Norman Twain (1930–2016), American film producer
 * Shania Twain (born 1965), Canadian singer-songwriter

Places

 * Twain, California, a census-designated place in Plumas County
 * Douglas River, formerly named Twain, in New Zealand

Other uses

 * TWAIN, a communication standard for computer software and digital imaging devices