Sachems and sagamores are paramount chiefs among the Algonquians or other Native American tribes of northeastern North America, including the Iroquois. The two words are anglicizations of cognate terms from different Eastern Algonquian languages. Some sources indicate the sagamore was a lesser chief elected by a single band, while the sachem was the head or representative elected by a tribe or group of bands; others suggest the two terms were interchangeable. The positions are elective, not hereditary. Although not strictly hereditary the title of Sachem is often passed through the equivalent of tanistry.

A paramount chief is the English-language designation for the highest-level political leader in a regional or local polity or country administered politically with a chief-based system. This term is used occasionally in anthropological and archaeological theory to refer to the rulers of multiple chiefdoms or the rulers of exceptionally powerful chiefdoms that have subordinated others. Paramount chiefs were identified by English-speakers as existing in Native American confederacies and regional chiefdoms, such as the Powhatan Confederacy and Piscataway Native Americans encountered by European colonists in the Chesapeake Bay region of North America.