| 释义 |
- British Empire
- Portugal
- Spanish Empire
{{Colonial governors by year|year=1821}}British Empire- Antigua – Benjamin d'Urban, Governor of Antigua (1819–1826)
- India – Francis Rawdon-Hastings, 1st Marquess of Hastings, Governor-General of India (1813–1823)
- Ionian Islands – Thomas Maitland, Lord High Commissioner (1816–1823)
- Malta Colony – Thomas Maitland, Governor of Malta (1813–1824)
- New South Wales
- # Major-General Lachlan Macquarie, Governor of New South Wales (1810–1821)
- # Major-General Thomas Brisbane, Governor of New South Wales (1821–1825)
Portugal- Angola –
- # Manuel Vieira Tovar de Albuquerque, Governor of Angola (1819–1821)
- # Joaquim Inácio de Lima, Governor of Angola (1821–1822)
Spanish Empire- Viceroyalty of New Granada – Juan de la Cruz Mourgeón y Achet, nominal Viceroy of New Granada (1819–1821)
- Viceroyalty of New Spain –
- #Juan Ruíz de Apodaca, conde de Venadito, Viceroy of New Spain (1816–1821)
- #Francisco Novella Azabal Pérez y Sicardo, Viceroy of New Spain (1821)
- #Juan O'Donojú, Viceroy of New Spain (1821)
- Captaincy General of Cuba –
- #Juan Manuel Cajigal y Niño, Governor of Cuba (1819–1821)
- #Nicolás de Mahy y Romo, Governor of Cuba (1821–1822)
- Spanish East Indies – Mariano Fernández de Folgueras, Governor-General of the Philippines (1816–1822)
- Captaincy General of Santo Domingo – José Núñez de Cáceres, Governor of Santo Domingo (1821)
- Viceroyalty of Peru –
- #Joaquín de la Pezuela y Sánchez, marqués de Viluma, Viceroy of Peru (1816–1821)
- #José de la Serna e Hinojosa, 1st Count of los Andes, Viceroy of Peru (1821–1824)
3 : 1821-related lists|1821 in international relations|Lists of colonial governors by year |