Rainbow Falls is the name of several waterfalls:
New Zealand:
Rainbow Falls (Waianiwaniwa), at Kerikeri
Aniwaniwa Falls (Rainbow Falls) near Lake WaikaremoanaCanada:
Rainbow Falls, British ColumbiaUnited States:
Rainbow Falls, Adirondack State Park, New York
Rainbow Falls (California), Devils Postpile National Monument, California
Rainbow Falls (Chattooga River), Cashiers, North Carolina
Rainbow Falls (Chelan County), Stehekin, Washington
Rainbow Falls (Hawaii), Hilo, Hawaii
Rainbow Falls (Horsepasture River), Transylvania County, North Carolina
Rainbow Falls (Manitou Springs, Colorado)
Rainbow Falls (Michigan), Black River, Michigan
Rainbow Falls (Missouri River), Great Falls, Montana
Rainbow Falls (Montana), Glacier National Park
Rainbow Falls (Rutherford County), Rutherford County, North Carolina
Rainbow Falls State Park, Lewis County, WashingtonComputing Systems:
SPARC T3, a microprocessor also known as "Rainbow Falls"Other:
Rainbow Falls Trail
Rainbow Falls, an episode of the fourth season of My Little Pony: Friendship Is Magic