Diocese of Walla Walla

Suppressed

Diocese of Walla Walla
- Type of Jurisdiction: Diocese
- Erected: 24 July 1846
- Metropolitan: Archdiocese of Oregon City
- Rite: Latin (or Roman)
- State: Oregon
- Country: United States of America

Augustin Magloire Alexandre Blanchet † (28 Jul 1846 Appointed - 31 May 1850 Appointed, Bishop of Nesqually, Washington)
Francis Xavier Norbert Blanchet † (31 May 1850 Appointed - 29 Jul 1853 Resigned)

Date	Event	From	To
24 July 1846	Erected	Vicariate Apostolic of Oregon Territory	Diocese of Walla Walla (erected)
31 May 1850	Suppressed	Diocese of Walla Walla (suppressed)	Diocese of Nesqually (erected)
29 July 1853	Suppressed	Diocese of Walla Walla (suppressed)