Sitzmark Ski Area is a small ski area near the community of Havillah, Okanogan County, Washington, 20 miles (32 km) northeast of the city of Tonasket. The area's 10 named trails, covering 80 skiable acres, are located on Knob Hill. The base elevation is at 4,300 feet (1,300 m) and the top at 4,950 feet (1,510 m), yielding a vertical drop of 650 feet (200 m). Its slopes are served by one double chairlift and one rope tow.

The area's "signature run" is Stump Run.

• Sitzmark Ski Area on Facebook
• Photos and description of Sitzmark's chairlift at Liftblog
• Sitzmark at SkiMap.org