of state leaders by century List of state leaders in the 19th century (1851–1900) List of state leaders in the 20th century (1901–1950) List of state...

of state leaders in the 20th century include: List of state leaders in the 20th century (1901–1950) List of state leaders in the 20th century (1951–2000)...

is a list of state leaders in the 20th century (1901–1950) AD, such as the heads of state, heads of government, and the general secretaries of single-party...

'01 List of state leaders in the 20th century (1951–2000) List of state leaders in the 20th century (1901–1950) List of state leaders in 20th-century British...

a list of the top-level leaders for religious groups with at least 50,000 adherents, and that led anytime from January 1, 1901, to December 31, 2000. It...

is a list of state leaders in the 21st century (2001–present) AD, such as the heads of state, heads of government, or the general secretaries of single-party...

This is a list of territorial governors in the 20th century (1901–2000) AD, such as the administrators of colonies, protectorates, or other dependencies...

This is a list of state leaders in the 19th century (1851–1900) AD, except for the leaders within British south Asia and its predecessor states, and those...

is a List of state leaders in the 20th century (1901–1950) AD, of British Raj. These polities are vassal states under a subsidiary alliance to the British...

This is a timeline of the 20th century. January 1: The Australian colonies federate. January 22: Edward VII became King of England and India after Queen...