TECMO (previously known as Tehkan) is the Japanese company that develops and publishes games within the Monster Rancher series. They were founded in 1967. Though recently UFO interactive has been publishing Monster Rancher games in English. They have recently merged with Koei, forming "Tecmo-Koei". Cing has also been known to assist in the development of Monster Rancher games.
- In the anime, this company is named MECTO.