- Jun 6 Turner Ashby, General, killed near Harrisonburg, Virginia, dies at 33
- Jun 7 William B. Mumford, 1st US citizen hanged for treason, at 42
- Jun 17 Charles Canning, English 1st viceroy of British-Indies, dies at 49
- Jun 27 Chatham Roberdeau Wheat, Confederate major, dies in battle at about 35
- Jun 30 Richard Griffith, US Confederate brigadier general, dies in battle at 48