To Mega Therion

To Mega Therion (Greek for "The Great Beast") may refer to:
 * The Beast (Revelation), one of two beasts described in the Book of Revelation
 * Aleister Crowley (1875–1947), British poet, mountaineer, occultist, and founder of Thelema
 * Megatherion, a former name for the band Therion
 * To Mega Therion (album), a 1985 album by extreme metal band Celtic Frost
 * "To Mega Therion", a song by Therion from the 1996 album Theli
 * Tomegatherion, a fictional character in the video game Body Harvest