thumb |right|300px|Portrait of [[Frederick III, German Emperor|Kaiser Friedrich III, the pub sign of the King of Prussia Coaching Inn in Penpergwm in Monmouthshire ]]<!--Illustrates the coaching inn category, none of which yet have wikipages, and also (superflously) the rulers of Prussia -->
King of Prussia may refer to:
- A ruler of the former German state of Prussia
- List of rulers of Prussia
- People
- John Carter (smuggler), a Cornish smuggler known as the King of Prussia
- Place names
- King of Prussia, Pennsylvania
- The original name of The Green railway station on the Ravenglass & Eskdale Railway in Cumbria, England
- Various Coaching Inns in the UK
- Shopping centers
- King of Prussia (shopping mall)