Wildcat Brook, by John White Allen Scott
|- left||Bog Brook, Davis Brook, Great Brook|
|- right||Little Wildcat Brook, Marsh Brook|
|- location||Carter Notch, Bean's Purchase, NH|
|- elevation||3,280 ft (1,000 m)|
|- location||Jackson, NH|
|- elevation||740 ft (226 m)|
|Length||9.05 mi (15 km) |
|Designated||October 28, 1988|
Wildcat Brook,  also known as the Wildcat River, is a 9.05-mile-long (14.56 km)  stream in the White Mountains of New Hampshire, in the United States. It rises at Carter Notch in the township of Bean's Purchase in Coos County, and flows south through the town of Jackson in Carroll County to its confluence with the Ellis River near the town's southern boundary. At Jackson Falls, near the town center, the stream descends 120 feet (37 m) in 1⁄4 mile (0.4 km) over scenic granite ledges,  paralleled by New Hampshire Route 16B (Carter Notch Road). The surrounding area is part of the Jackson Falls Historic District.
Via the Ellis River, Wildcat Brook is part of the Saco River watershed, with its waters reaching the Atlantic Ocean near Biddeford, Maine. The entire brook, from Carter Notch to the Ellis River, is part of the designated National Wild and Scenic River System, as are its tributaries Little Wildcat Brook, Bog Brook, and Great Brook.
- "Wildcat Brook, New Hampshire". National Wild and Scenic Rivers System. Retrieved February 22, 2017.
- U.S. Geological Survey Geographic Names Information System: Wildcat Brook
- "Jackson, New Hampshire". U.S. Geological Survey 7.5 minute topographic map series. Mapper.acme.com. Retrieved February 22, 2017.