The Trinovantes or Trinobantes are one of the Celtic tribes of pre-Roman Britain.

Their territory is on the north side of the Thames estuary in current Essex and Suffolk, and includes lands now located in Greater London.

They are bordered to the north by the Iceni, and to the west by the Catuvellauni.

Their name derives from the Celtic intensive prefix "tri-" and "novio" - new, so meaning "very new" in the sense of "newcomers", but possibly with an applied sense of vigorous or lively - so the name could mean "the very vigorous people".

Their capital is Camulodunum (modern Colchester), one proposed site of the legendary Camelot.