- Aug 3 Joseph Paxton, English landscape architect (Crystal Palace), born in Milton Bryan, Bedfordshire (d. 1865)
- Aug 13 Vladimir Odoevsky, Russian philosopher & writer, born in Moscow (d. 1869)
- Aug 15 James Douglas 'The Father of British Columbia' British Columbian fur trader and politician (1st Governor of British Columbia 1858-64), born in Demerara, Guyana (d. 1877)
- Aug 18 Nathan Clifford, American statesman, diplomat, and Justice of the U.S. Supreme Court (d. 1881)
- Aug 25 Luís Alves de Lima e Silva, Duque de Caxias and Brazilian military leader, born in Rio de Janeiro, Brazil (d. 1880)
- Aug 27 Edward Beecher, American theologian, born in East Hampton, New York (d. 1895)