Alonzo Cushing (1841-1863)
Jul 3 American Union officer, dies at the Battle of Gettsburg at about 22
- Jul 3 Elon John Farnsworth, American Brigadier General (Union Army), dies at the battle of Gettysburg at 25
- Jul 3 George Hull Ward, American general and Union officer in the American Civil War, dies of his wounds at the Battle of Gettysburg at 37
- Jul 3 Little Crow [Ta-oya-te-duta], Mdewakanton Dakota leader (Treaty of Mendota), shot and killed by settlers at about 53
- Jul 3 Richard B. Garnett, American Confederate Brigadier General, killed during Pickett's Charge, Battle of Gettysburg at 45
- Jul 3 Samuel K. Zook, American Union general-major, dies of his wounds from the Battle of Gettysburg at 40
- Jul 3 William Barksdale, American Confederate Brigadier General, dies in the Battle of Gettysburg while leading his brigade's attack at 41
- Jul 4 Paul Joseph Revere, American grandson of Paul Revere, Brigadier General (Union Army), dies at 30
- Jul 5 Lewis Armistead, Confederate brigadier general at Gettysburg (Pickett's Charge), dies of his injuries from the battle of Gettysburg at 46
- Jul 6 Strong Vincent, American army officer (fought at Battle of Gettysburg), dies at 26 fighting at the Little Round Top in Gettysburg
- Jul 8 Francis Kenrick, Irish-American Archbishop of Baltimore (1851-63), dies at 65
- Jul 10 Clement Clarke Moore, American Professor and writer ('Twas the Night Before Xmas), dies at 83
- Jul 10 Paul Jones Semmes, American businessman and Brigadier General (Confederate Army), dies at 48
- Jul 13 John S. Bowen, American Major General (Confederate Army), dies at 32
- Jul 17 J. Johnston Pettigrew, American lawyer and Confederate General in the American Civil War, dies at 35
- Jul 18 William Dorsey Pender, US Confederate Major General, dies of injuries at 29
- Jul 22 Karl Schuberth, German cellist, and composer, dies at 52
Sam Houston (1793-1863)
Jul 26 1st President of Republic of Texas (1836-38, 1841-44) who helped bring Texas into the United States as a constituent state, dies at 70