The Woodinville Subdivision was a railroad line that was formerly owned by BNSF Railway. It takes its name from one of its original end points in Woodinville, Washington, United States. The line extended approximately 42 miles (68 km) in east King County and Snohomish County. The line's ownership was transferred in a deal involving King County and the Port of Seattle. After BNSF discontinuation of service, the section from Snohomish to Woodinville was operated under contract by Eastside Rail Freight, owned by Ballard Terminal Railroad and Meeker Southern. As of 2024, the line is officially railbanked as decided by the Surface Transportation Board.