- Jul 5 Robert FitzRoy, British naval officer and scientist, born in Ampton, Suffolk, England (d. 1865)
- Jul 9 Henry John Gauntlett, English organist and composer, born in Wellington, Shropshire (d. 1876)
- Jul 26 Constantino Brumidi, Greek-Italian-American historical artist (Myrtle Murdock), born in Rome (d. 1880)
- Jul 29 Alexis de Tocqueville, French statesman/writer (Democracy in America)