Rat king (disambiguation)
A rat king is a rare phenomenon where a group of rats' tails become entangled.
Rat King or Ratking may also refer to:
Fictional characters
- Rat King, in Adventure Time
 - Rat King, in The Amazing Maurice and his Educated Rodents
 - Rat King, in Hilda
 - Rat King, in The Penguins of Madagascar
 - Rat King (Teenage Mutant Ninja Turtles), in the Teenage Mutant Ninja Turtles multimedia franchise
 
Other uses
- Ratking (novel), a 1988 novel by Michael Dibdin
 - Ratking (group), a hip hop group from New York City
 - Rat King, a 2012 Finnish thriller film by Petri Kotwica
 - "The Rat King", 2015 season 5 episode 5 of Grimm
 - Ratking (ラットキング, rattokingu), another English equivalent for the yakuza term
 
See also
- "The King of Rats", a short story prequel set in the world of the young adult trilogy The Sin Eater's Daughter by Melinda Salisbury
 - King Rat (disambiguation)