List of 869 Major News Events in History, Most Important Historical Events in 869
| Date | Event |
|---|---|
| July 9, 869 | The 8.4–9.0 Mw Sanriku earthquake strikes the area around Sendai in northern Honshu, Japan. Inundation from the tsunami extended several kilometers inland. |
| October 5, 869 | The Fourth Council of Constantinople is convened to depose patriarch Photios I. |