The River Garry (Scottish Gaelic: Gar / Abhainn Ghar) is a major tributary of the River Tummel, itself a tributary of the River Tay, in the traditional county of Perthshire in the Scottish Highlands. It emerges from the northeastern end of Loch Garry (56°49′09″N 4°13′52″W / 56.8193°N 4.2311°W / 56.8193; -4.2311 (River Garry, source)), just to the southeast of the Pass of Drumochter, and flows southeastwards and eastwards down Glen Garry to the narrow Pass of Killiecrankie beyond which it joins the Tummel (56°43′06″N 3°46′44″W / 56.7182°N 3.7790°W / 56.7182; -3.7790 (River Garry, mouth)).