A
| Name | Nationality | Century | Main area/s explored |
|---|---|---|---|
| Charles Albanel | French | 17th | Canada |
| Afonso de Albuquerque | Portuguese | 16th | Asia |
| Edwin "Buzz" Aldrin | American | 20th | the Moon |
| Pêro de Alenquer | Portuguese | 15th | Africa |
| Benedict Allen | British | 20th/21st | various |
| Diego de Almagro | Spanish | 16th | Peru, Chile |
| Francisco de Almeida | Portuguese | 16th | India |
| Pedro de Alvarado | Spanish | 16th | Mexico, Guatemala, Honduras |
| Francisco Álvares | Portuguese | 16th | Ethiopia |
| Jorge Álvares | Portuguese | 16th | China |
| Roald Amundsen | Norwegian | early 20th | South Pole, Antarctica, Northwest Passage |
| António de Andrade | Portuguese | 16th/17th | India, Tibet |
| Henryk Arctowski | Polish | 20th | Antarctic, South America |
| Salomon August Andrée | Swedish | 19th | Arctic |
| Roy Chapman Andrews | American | 20th | China, Mongolia |
| Neil Armstrong | American | 20th | the Moon (first man on the moon) |
| Ingólfur Arnarson | Norse | 9th | Iceland |
| Väinö Auer | Finnish | 20th | Tierra del Fuego and Patagonia |
| Diogo de Azambuja | Portuguese | 15th | West African coast |
Read more about this topic: List Of Explorers