1921 in New Zealand

Regal and viceregal

• Head of State – George V
• Governor-General – John Jellicoe, Viscount Jellicoe^[1]

• 
  George V
• 
  Viscount Jellicoe

Government

The 20th New Zealand Parliament continues, with the Reform Party in Government

• Speaker of the House – Frederick Lang
• Prime Minister – William Massey
• Minister of Finance – William Massey
• Minister of External Affairs – Ernest Lee

• 
  Frederic Lang
• 
  William Massey
• 
  Ernest Lee

Parliamentary opposition

• Leader of the Opposition – Thomas Wilford (Liberal Party)^[2]

• 
  Thomas Wilford

Judiciary

• Chief Justice – Sir Robert Stout

• 
  Robert Stout

Main centre leaders

• Mayor of Auckland – James Gunson
• Mayor of Wellington – John Luke then Robert Wright
• Mayor of Christchurch – Henry Thacker
• Mayor of Dunedin – William Begg then James Douglas

• 
  James Gunson
• 
  John Luke
• 
  Robert Wright
• 
  Henry Thacker
• 
  William Begg
• 
  James Douglas

Music

See: 1921 in music

Radio

• 17 November – Professor Robert Jack assembles a small transmitter at the University of Otago in Dunedin and broadcasts the first ever radio programme heard on New Zealand airwaves. The only known fact about the programme's content is that it included the then popular song "Hello My Dearie".

See: Public broadcasting in New Zealand

Film

• Beyond
• The Betrayer

See: Category:1921 film awards, 1921 in film, List of New Zealand feature films, Cinema of New Zealand, Category:1921 films

Chess

• National champion – John Boyd Dunlop, of Dunedin (his first title)^[5]

Cricket

• Plunket Shield

Football

• Provincial league champions:^[6]
  • Auckland – Northcote
  • Canterbury – Corinthians
  • Hawke's Bay – Waipukurau
  • Nelson – Athletic
  • Otago – HSOB
  • Southland – Corinthians
  • Wanganui – Eastown Workshops
  • Wellington – Hospital

Golf

• The 11th New Zealand Open championship is won by Ted Douglas (his fourth title)^[7]
• The 25th National Amateur Championships are held in Christchurch:^[8]
  • Men – A.G. Sime (Greymouth)
  • Women – G. Williams (her fourth title)

Horse racing

Lawn bowls

The national outdoor lawn bowls championships are held in Wellington.^[12]

• Men's singles champion – J.M. Brackenridge (Newtown Bowling Club)
• Men's pair champions – W.A. Grenfell, S. Potter (skip) (Wellington Bowling Club)
• Men's fours champions – B. Hilton, A. Bell, O. Gallagher, Ernie Jury (skip) (Karangahake Bowling Club)

Rugby union

• 1921 South Africa rugby union tour of Australia and New Zealand
• Southland defend the Ranfurly Shield once against Otago (10–8) before losing it to Wellington (13–28). Wellington then defend it against Auckland (27–19) and Otago (13–8).^[13]

Shooting

• Ballinger Belt – Earl Vennell (Te Wharau)^[14]