- Jun 1 Christo Botew, writer, dies
- Jun 8 George Sand [Amantine-Lucile-Aurore Dudevant], French author (Indiana, Consuelo), dies at 71
- Jun 17 Harriet Scott, American ex-slave, who with husband Dred Scott unsuccessfully sued for their freedom
- Jun 18 August Rockel, composer, dies at 61
- Jun 21 Antonio López de Santa Anna, President of Mexico who dominated Mexican history in the first half of the 19th century, dies at 79
- Jun 25 Boston Custer, brother of George Armstrong Custer, dies at 27
George Armstrong Custer
Jun 25 George Armstrong Custer, United States Army officer and cavalry commander in the American Civil War and the American Indian Wars, dies at the Battle of Little Bighorn aged 36
George Armstrong Custer
- Jun 25 John Patton, trumpeter, dies at Little Bighorn
- Jun 25 Lame White Man, Cheyenne, dies at Little Bighorn
- Jun 25 Myles Keogh, US officer, dies at Little Bighorn
- Jun 25 Thomas W Custer, brother of George Custer, dies at Little Bighorn
- Jun 27 Christian G Ehrenberg, German zoologist (micro-organisms), dies at 81
- Jun 27 Harriet Martineau, British controversial journalist, political economist, abolitionist and life-long feminist, dies at 74
- Jun 28 August W Ambros, Austria musicologist, dies at 59