Ganbarion (ガンバリオン; Ganbarion) is a Japanese video game company based in Fukuoka. Founded on August 13, 1999 by former Technosoft members, such as Chikako Yamakura, It develops games primarily for home consoles. Two of Ganbarion's major clients are Bandai Namco Entertainment and Nintendo. The company is best known for developing games based on One Piece, Jump Super Stars, Jump Ultimate Stars, and Pandora's Tower. Ganbarion also co-developed Wii Fit U in collaboration with Nintendo EAD.

The studio's name is an abbreviation of its former motto "Ganbari switch ON!"; ganbari is derived from the Japanese word ganbaru (頑張る), one meaning of which is "do your best".