Royal Sussex may refer to:
- Royal Sussex County Hospital, an acute teaching hospital in Brighton, England
- The Royal Sussex Regiment, a British army unit founded in 1881, merged into the Queen's Regiment in 1966
- 35th (Royal Sussex) Regiment of Foot, a component of the Royal Sussex Regiment
- The ancient Kingdom of Sussex, once located around modern Sussex, a county in southeast England
|This disambiguation page lists articles associated with the title Royal Sussex.
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