The China Ditch in Douglas County, in the U.S. state of Oregon, was a 30-mile (48 km) canal built in part by Chinese laborers to supply water for the hydraulic mining of gold.

The Myrtle Creek Consolidated Hydraulic Gold Mining and Manufacturing Company began purchasing land for the ditch in 1890 and was bankrupt by 1894.

Portions of the ditch, which carried water from Little River to North Myrtle Creek, remain visible, and an 11-mile (18 km) section is listed on the National Register of Historic Places.

In 1889, miners in the area began planning for 2,000 acres (810 ha) of new placers around North Myrtle Creek and became convinced that the surrounding hillsides also held significant deposits.

After surveyors employed by the company determined that the project was feasible, 80 men began construction, and by early winter they had completed 7 miles (11 km) of the ditch.