Grizzly River Run, River rapids ride in Disney California Adventure, Anaheim, California, United States.

Grizzly River Run is a river rapids ride at Disney California Adventure in Anaheim, California. Eight-person circular rafts are lifted by a wooden conveyor under leaking pipes, then descend chutes around Grizzly Peak, passing a cave and a log jam before a final drop into a geyser field. The rafts are engineered to spin as they go down the chutes.

The attraction opened in February 2001 as part of the new California Adventure Park and was developed in response to the success of similar water rides at other Disney parks. It marked an expansion of the park's ride offerings during that period.

The queue is set in the fictional Grizzly River Rafting Company, and its 2007–2012 refurbishment replaced an extreme-sports theme with an homage to California state parks, drawing on Redwood Creek and the Sacramento River. Around the entrance, elements recall the turn-of-the-century wave of wildlife conservation and the "golden age" of national parks.

Riders must be at least 42 inches (107 cm) tall to board, and lockers near the entrance store electronics and items that should stay dry. It helps to use waterproof bags for valuables and wear non-slip footwear before the ride.

The final drop spins the rafts as they begin their descent, a feature that sets Grizzly River Run apart from other rapids rides. Water drained from the upper flumes is stored in the tidal basin of Pacific Wharf, now San Fransokyo Square, across the walkway, where the changing level mimics a rising and falling tide.