Three-headed monster may refer to:
3 Headed Monsters, a 3x3 basketball team 3-Headed Shark Attack (2015), horror film Azi dahaka, a three-headed dragon in Persian mythology Cerberus, a multi-headed (usually three-headed) dog in Greek and Roman mythology King Ghidorah, a three-headed dragon in the Godzilla franchise Ghidorah, the Three-Headed Monster (1964), the kaiju film in which Ghidorah debuted Triple deity, a deity associated with the number three in mythology Zmiy Gorynych, a multi-headed (usually three-headed) Slavic dragon
See also Two-Headed Monster, a Muppets character