Dragon Quest XI: Echoes of an Elusive Age is a role-playing video game by Square Enix. The eleventh entry in the long-running Dragon Quest video game series, it was released in Japan for the Nintendo 3DS and PlayStation 4 in July 2017 and worldwide for the PlayStation 4 and Windows in September 2018. An enhanced version, Dragon Quest XI S: Echoes of an Elusive Age – Definitive Edition, was released for the Nintendo Switch in September 2019; for PlayStation 4, Windows, and Xbox One in December 2020; and for Stadia in March 2021. Taking place in a world called Erdrea, the game follows the hero's quest to save the world from an impending darkness. Throughout the game, he explores challenges related to his prophesied Luminary identity as he endures persecution from those who demonize him.

One of the first games announced for the Switch, the game was originally conceived to be fully open world, but the idea was discarded when it conflicted with the story the developers wanted to tell. To increase the awareness of the Dragon Quest franchise in the West, support for Windows and features such as voiced English dialogue and 4K resolution were included. Elements added later included an expanded plot and an option to listen to an orchestral version of the score.

Upon release, the game received critical acclaim for its story, characters, narrative, and localization, though its design was criticized for being overly traditional. The game shipped over six million copies by September 2020. The protagonist, the Luminary, has also been featured in crossover media such as Super Smash Bros. Ultimate.