- Jun 5 John McDouall Stuart, Australian explorer, dies at 50
- Jun 7 Chief Seattle, Native American leader
- Jun 8 Wilhelm Schirmer, German landscape artist, dies at 64
- Jun 16 Joseph Méry French poet (b. 1798)
- Jun 17 Lewis Cass, American military officer and politician (U.S. Senator-Michigan), dies at 83
- Jun 18 Jacob Abels, Dutch painter, dies at 62
- Jun 23 Samuel Sarphati, Amsterdam physician/social activist, dies at 53
- Jun 25 Alexander von Nordmann, Finnish zoologist, dies at 63