Dragon Quest II: Luminaries of the Legendary Line, titled Dragon Warrior II when initially localized to North America, is a role-playing video game developed by Chunsoft and published by Enix in 1987 for the Nintendo Entertainment System as a part of the Dragon Quest series. Enix's U.S. subsidiary published the American release, Dragon Warrior II, for the Nintendo Entertainment System in 1990. Dragon Quest II is set one hundred years after the events of the first game.

Dragon Quest, previously published as Dragon Warrior in North America until 2005, is a series of role-playing games created by Japanese game designers Armor Project, Bird Studio and Sugiyama Kobo to its publisher Enix, with all of the involved parties co-owning the copyright of the series since then. The games are published by Square Enix since its inception, with localized remakes and ports of later installments for the Nintendo DS, Nintendo 3DS, and Nintendo Switch being published by Nintendo outside of Japan. With its first game published in 1986, there are eleven main-series games, along with numerous spin-off games. In addition, there have been numerous manga, anime and novels published under the franchise, with nearly every game in the main series having a related adaptation.