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List of state leaders in the 19th century 
Summary
Lists of state leaders in the 19th century include:
- List of state leaders in the 19th century (1801–1850)
- List of state leaders in the 19th century (1851–1900)
- List of governors of dependent territories in the 19th century
- List of state leaders in 19th-century British South Asia subsidiary states
- List of state leaders in the 19th-century Holy Roman Empire