Sunlight Creek is a tributary of Clarks Fork Yellowstone River part of the Yellowstone River watershed, located in Park County, Wyoming, United States in the Shoshone National Forest.

[2] Sunlight Creek then flows northeast into the Clarks Fork Yellowstone River.

In the early 1800s, prospectors and fur traders trapped in dense fog in the mountains named the Sunlight Basin after the sudden sunlight-covered valley.

"[3] Sunlight Creek, which flows east through the middle of the area from the mountains into the canyon, is named for the basin.

In 1877, Chief Joseph and his Nez Perce travelled through Sunlight Gorge whilst escaping US cavalries,[3] as part of three months and 1,170 miles (1,880 km) outmaneuvering them through present-day Oregon, Washington, Idaho, Wyoming, and Montana during the Nez Perce War.