The Legend of Heroes: Trails of Cold Steel is a 2013 role-playing video game developed by Nihon Falcom. The game is a part of the Trails series, itself a part of the larger The Legend of Heroes series. It was initially released in Japan for the PlayStation 3 and PlayStation Vita before being localized in English by Xseed Games in 2015.

A Windows port was also released by Xseed in 2017, which included additional English voice acting. Another port for the PlayStation 4 was released in Japan in 2018, and worldwide the following year. A port for Nintendo Switch was released in Japan and Asia in 2021.

The first part of a four-part arc, the game was followed up by The Legend of Heroes: Trails of Cold Steel II in 2014.

The gameplay of Trails of Cold Steel is similar to previous Trails games, being a traditional Japanese role-playing video game with turn-based battles. It adds free camera movement and fully 3D character models.

The game has a new battle system, designed for commands in fights to be selected at a faster rate. The system allows players to pair characters up with a "Link" system, which allows follow-up attacks and provide various other benefits. Links becomes a more useful asset to the player as the story progress and characters level up their "Link Levels" with other characters Cold Steel maintains the "AT" (Action Time) battle system, which displays ally versus enemy turns on a bar on the screen. The Orbment system from past games has been streamlined. Trails of Cold Steel inherits the "Master Quartz" system from Trails to Azure.

Players can transfer save data between the PlayStation 3, PlayStation Vita, and PlayStation 4 versions using cross-save functionality.