Oratam (or Oritani) was sagamore, or sachem, of the Hackensack Indians living in northeastern New Jersey during the period of early European colonization in the 17th century. Documentation shows that he lived an unusually long life (almost 90 years) and was quite influential among indigenous and immigrant populations. Oratam played a vital role in the negotiations for the sale of land to Robert Treat at what would grow to become Greater Newark in 1666. A representation of Chief Oratam of the Achkinhenhcky appears on the Hackensack municipal seal.