Nathan Cook Meeker (July 12, 1817 – September 30, 1879) was a 19th-century American journalist, homesteader, entrepreneur, and Indian agent for the federal government. He is noted for his founding in 1870 of the Union Colony, a cooperative agricultural colony in present-day Greeley, Colorado. The town of Meeker, Colorado and Mount Meeker in Rocky Mountain National Park are named for him.