The following elections occurred in the year 1900.
- 1900 Norwegian parliamentary election
- 1900 Portuguese legislative election
- 1900 Italian general election
- 1900 United Kingdom general election
- List of MPs elected in the 1900 United Kingdom general election
- 1900 Portsmouth by-election
- 1900 Rossendale by-election
- 1900 Wilton by-election
- 1900 Canadian federal election
- 1900 British Columbia general election
- 1900 Edmonton municipal election
- 1900 Newfoundland general election
- 1900 Prince Edward Island general election
- 1900 Quebec general election
- 1900 Yukon general election
- 1900 New York state election
- 1900 South Carolina gubernatorial election
- 1900 United States House of Representatives elections
- United States House of Representatives elections in California, 1900
- United States House of Representatives elections in South Carolina, 1900
- 1900 United States presidential election
- 1900 and 1901 United States Senate elections
The following elections occurred in the year 1900.
- 1900 Norwegian parliamentary election
- 1900 Portuguese legislative election
- 1900 Italian general election
- 1900 United Kingdom general election
- List of MPs elected in the 1900 United Kingdom general election
- 1900 Portsmouth by-election
- 1900 Rossendale by-election
- 1900 Wilton by-election
- 1900 Canadian federal election
- 1900 British Columbia general election
- 1900 Edmonton municipal election
- 1900 Newfoundland general election
- 1900 Prince Edward Island general election
- 1900 Quebec general election
- 1900 Yukon general election
- 1900 New York state election
- 1900 South Carolina gubernatorial election
- 1900 United States House of Representatives elections
- United States House of Representatives elections in California, 1900
- United States House of Representatives elections in South Carolina, 1900
- 1900 United States presidential election
- 1900 and 1901 United States Senate elections