Dragon Quest Monsters 2 is a 2001 spinoff game in the Dragon Quest series, and the second game in the Dragon Quest Monsters sub-series. Like its predecessor, Dragon Quest Monsters 2 features young children and the monsters they have recruited and trained to fight for them.

In a similar fashion to the Pokémon series of games, Dragon Quest Monsters 2 was released in two versions, called Dragon Warrior Monsters 2: Cobi's Journey and Dragon Warrior Monsters 2: Tara's Adventure in the North American localization. In addition to minor aesthetic differences, each version alters which monsters are common and rare to encourage trading amongst players without locking away specific creatures. Each version also has a different protagonist who will experience their own take on the game's events.

The Nintendo 3DS Version of both games were remade in 2014, called Dragon Quest Monsters 2: Iru and Luca's Marvelous Mysterious Key and released only in Japan.