Dragon Quest IV: Chapters of the Chosen, titled Dragon Warrior IV when initially localized to North America, is a role-playing video game, the fourth installment of the Dragon Quest video game series developed by Chunsoft and published by Enix, and the first of the Zenithian Trilogy.

Dragon Quest IV offered several new features over the first three titles, while carrying on many of those introduced in the previous games. Similar features included are the day and night cycles, the ability to travel via ship and a flying vehicle (this time, a hot air balloon), and the three levels of keys. They are Thief, Magic and Ultimate (originally localized as Final). There are also travel doors, which allow the party to move a great distance on the world map with little travel. Unlike the Hero in Dragon Warrior III, the Hero of Dragon Quest IV is not required to be in the party at all once the wagon becomes available. Despite this, the Hero is again the character that possesses the most powerful healing and attack spells. Many spells, weapons, armor, and shops (including the vault/bank) function the same as in past games.