TNK (ティー・エヌ・ケー Tii Enu Kee) is a Japanese animation studio. Founded on January 29, 1999 by Teru Kato, a former animator from Tatsunoko Production, TNK is located in Nerima, Tokyo Prefecture, Japan. They have produced a number of series to date including such titles as Kannazuki no Miko, UFO Ultramaiden Valkyrie, Lovedol ~Lovely Idol~ and I My Me! Strawberry Eggs.
TNK has been involved with a number of other series, including Asatte no Houkou, Cowboy Bebop: The Movie, Honey and Clover, Jyu Oh Sei, Karin, Planetes and R.O.D the TV.