Ys III: Wanderers from Ys (イースIII – ワンダラーズフロムイース, Īsu Surī – Wandarāzu Furomu Īsu) is an action role-playing video developed by Nihon Falcom. It is the third game in the Ys series.

Ys III was initially released for the PC-8801 and PC-9801 in 1989, and versions for the MSX2 and X68000 soon followed. In 1991, a number of console ports were produced: versions for the TurboGrafx-CD, Famicom, SNES, and Sega Genesis. A port for the PlayStation 2 was released by Taito Corporation in 2005.

The TurboGrafx-CD, SNES, and Genesis ports, as well as the PlayStation Portable and Microsoft Windows remakes, Ys: The Oath in Felghana, have received official English-translated releases. In addition, the Famicom and MSX2 ports have been fan-translated.