- a former county in SE England: divided into East Sussex and West Sussex.
- one of an English breed of red beef cattle.
- one of an English breed of chickens, raised chiefly for marketing as roasters.
- a kingdom of the Anglo-Saxon heptarchy in SE England.
- (until 1974) a county of SE England, now divided into the separate counties of East Sussex and West Sussex
- (in Anglo-Saxon England) the kingdom of the South Saxons, which became a shire of the kingdom of Wessex in the early 9th century a.d
- a breed of red beef cattle originally from Sussex
- a heavy and long-established breed of domestic fowl used principally as a table bird
