List of elections in 1921

• 1921 Belgian general election
• 1921 Italian general election
• 1921 Northern Ireland general election
• 1921 Norwegian parliamentary election

  Africa

• 1921 South African general election

  Asia

• 1921 Ceylonese Legislative Council election
• 1921 Persian legislative election

  Americas

• Canada
• * 1921 Canadian federal election
• * 1921 Alberta general election
• * 1921 Edmonton municipal election
• * 1921 Saskatchewan general election
• * 1921 Toronto municipal election
• 1921 Guatemalan presidential election
• United States
• * 1921 New York state election
• * 1921 North Dakota recall election

  Europe

• 1921 Belgian general election
• Irish elections
• 1921 Northern Ireland general election
• Italian general election
• Norwegian parliamentary election
• 1921 Portuguese legislative election
• Free State of Prussia : Landtag of Prussia election
• 1921 Swedish general election
• United Kingdom:
• * 1921 Bedford by-election
• * 1921 Orkney and Shetland by-election
• * 1921 Cardiganshire by-election
• * 1921 East Dorset by-election
• * 1921 Lewisham West by-election
• * 1921 Louth by-election
• * 1921 Northern Ireland general election
• * 1921 Penistone by-election
• * 1921 Penrith and Cockermouth by-election
• * 1921 Southwark South East by-election
• * 1921 Westminster Abbey by-election
• * 1921 Woolwich East by-election

  Oceania

Australia

• 1921 South Australian state election

  New Zealand

• * 1921 Auckland East by-election
• * 1921 Patea by-election