Joseph Naper, also known as "Joe Naper" and "Captain Joseph Naper" (1798–1862), was an early Illinois pioneer, ship captain, shipbuilder, businessman, surveyor, state militia officer, soldier, politician, and city planner. In 1831, Naper and his brother John were credited with founding Naper's Settlement, the oldest Illinois community to be established west of Fort Dearborn, now Chicago. Naper's Settlement would be renamed Naperville, becoming the oldest town and first county seat of DuPage County, Illinois, later moved by county vote in 1868 and displaced by Wheaton.