Morses Creek is a stream in Union County, New Jersey. It is a tributary of the Arthur Kill along with other rivers and streams, including the Elizabeth River, Rahway River, Piles Creek and Fresh Kills, and via Newark Bay, the Passaic River and the Hackensack River. Earlier names include Thompson's or Nine Mile Creek as well as Morse's Creek or Morse Creek. It is named for the family of Peter Morse, also spelled "Morss," who settled here in the 1600s and remained for 200 years; Morse family headstones may still be seen to this day.