- Jul 1 Alfred Thomas Archimedes Torbert, Bvt Major General (Union Army), born in Georgetown, Delaware (d. 1880)
- Jul 10 Lucius E. Polk, American Brigadier General (Confederate Army), born in Salisbury, North Carolina (d. 1892)
- Jul 19 John Wesley Turner, American Brevet Major General (Union Army), born in Saratoga, New York (d. 1899)
- Jul 22 Benjamin Hanby, American composer ("Jolly Old Saint Nicholas"), born in Rushville, Ohio (d. 1867)
- Jul 27 Thomas George Bonney, English geologist, born in Rugeley, United Kingdom (d. 1923)
- Jul 28 James Henry Lane, Brigadier General during Civil War (Confederate), born in Mathews Court House, Virginia (d. 1907)
20-29
30-39
40-49
50-59
80-89
Over 90