Series 1900

Series 1900, 1900 series, or variant, may refer to:


 * ICT 1900 series of mainframe computers
 * Cisco 1900-series switch for computer networking
 * Unimate 1900 series mechanical arm, first robotic arm for die casting
 * Series 1900 dollar bills of the United States; see History of the United States dollar
 * Series 1900 leu coins of Romania; see Coins of the Romanian leu