CTRL

CTRL or Ctrl may refer to several things:


 * Channel Tunnel Rail Link or High Speed 1 (HS1), a high-speed railway line linking London with the Channel Tunnel
 * Control key, an input button present on most computer keyboards
 * CTRL (gene), a gene that in humans encodes the enzyme chymotrypsin-like protease CTRL-1
 * Ctrl (web series), an American comedy web series from NBC
 * Ctrl (Derek Webb album), a 2012 album by singer-songwriter Derek Webb
 * Ctrl (SZA album), a 2017 album by singer-songwriter SZA
 * CTRL (TV series), a 2021 Singaporean television drama
 * Cyberoam Threat Research Labs, a facility of Cyberoam
 * The stock symbol for Control4