- Jun 3 Frank Pocock, British explorer, drowned in the Congo while travelling with Stanley
- Jun 3 Ludwig Ritter von Köchel, Austrian musicologist (Köchel catalogue of Mozart's works), dies of cancer at 77
- Jun 3 Sophie of Württemberg, Queen of Netherlands as wife of William III, dies at 58
- Jun 6 Prairie Flower, daughter of Ponca & chief Standing Bear, dies
- Jun 7 Winand Staring, Dutch geologist (Bottom of Netherlands), dies at 68
- Jun 9 Hugh W. Mercer, American Brigadier General (Confederate Army), dies at 68