Thunder Creek is a stream located entirely within North Cascades National Park and the Ross Lake National Recreation Area in the US state of Washington.

[2] Thunder Creek runs in a northerly direction most of its route starting from just north of Park Creek Pass in the south district of North Cascades National Park and ending at Diablo Lake in Ross Lake National Recreation Area.

Prior to the construction of the Diablo Dam, Thunder Creek emptied into the Skagit River.

A popular hiking trail parallels Thunder Creek its entire length.

This article related to a river in the state of Washington is a stub.