List of political entities in the 19th century

This is a list of political entities in the 19th century AD (i.e. 1801–1900). It includes both sovereign states, self-declared unrecognized states, and any political predecessors of current sovereign states.

• List of Bronze Age states
• List of Iron Age states
• List of Classical Age states
• List of states during Late Antiquity
• List of states during the Middle Ages