Silver Falls State Park is a state park in the U.S. state of Oregon, located near Silverton, about 20 miles (32 km) east-southeast of Salem. It is the largest state park in Oregon, with an area of more than 9,000 acres (36 km²), and it includes more than 24 miles (39 km) of walking trails, 14 miles (23 km) of horse trails, and a 4-mile (6.4 km) bike path. Its 7.2-mile (11.6 km) Canyon Trail/Trail of Ten Falls runs along the banks of Silver Creek and by ten waterfalls, from which the park received its name. Four of the ten falls have an amphitheater-like surrounding that allows the trail to pass behind the flow of the falls. The Silver Falls State Park Concession Building Area and the Silver Creek Youth Camp-Silver Falls State Park are separately listed on the U.S. National Register of Historic Places.

The park's most visited waterfall is South Falls, a 177-foot (54 m) cascade. Remote Double Falls, however, is listed as the highest waterfall in the park, plunging 178 feet (54 m) in a small tributary side canyon deep within the Silver Creek Canyon.

In recent years, Silver Falls State Park has hosted star parties in partnership with the amateur astronomy organization in Salem, Oregon called Night Sky 45.

Silver Falls State Park falls within the traditional lands of the Kalapuya and Molala tribes. They were nomadic and relied on game and salmon, as well as vegetation that grew in the fertile soil the area is rich in. The State of Oregon would eventually spend roughly $32,000 to acquire the land for the park but none of that money went to the original inhabitants of the land, who had been forcibly displaced by the European settlers who arrived in the area.

Silver Falls City formed in 1888 and was primarily a logging community with a few homesteaders, and the area was extensively logged. The small lumber town of Silver Falls City sat atop the South Falls, and as the land was cleared, a local entrepreneur sold admission to the Falls area, with attractions such as pushing cars over the falls and even hosting a stunt with a daredevil riding over in a canoe.

In 1902, June D Drake, a commercial photographer and owner of Drake Brothers Studio in Silverton, Oregon, began to campaign for park status, using his photographs of the falls to gain support. Drake Falls was later named for him. In 1926, however, an inspector for the National Park Service rejected the area for park status because of a proliferation of unattractive stumps after years of logging.

In 1935, President Franklin D. Roosevelt announced that the Silver Falls area would be turned into a Recreational Demonstration Area. Private land that had been logged was purchased, and workers in the Civilian Conservation Corps were employed to develop park facilities, including the historic South Falls Lodge, completed in the late 1930s. It was used as a restaurant from 1946 until the late 1950s and was listed on the National Register of Historic Places as the Silver Falls State Park Concession Building Area in 1983. The Silver Creek Youth Camp—Silver Falls State Park was also added to the National Register at this time.

Due to the work of those who protected the park, the forest has recovered from logging, grazing and agriculture. There was one stand of old growth firs at the time the park was inaugurated and it remains to this day. The rest of the forest has grown back and is now considered a secondary forest.