, literally ''West Ibaraki'', was a Districts of Japan, district located in Ibaraki Prefecture, Japan. As of 2004, the district had an estimated population of 52,291. The total area was 108.64 km². There were two municipalities before the dissolution: * Iwama, Ibaraki, Iwama * Tomobe, Ibaraki, Tomobe On March 19, 2006, the towns of Iwama, Ibaraki, Iwama and Tomobe, Ibaraki, Tomobe were merged into the expanded city of Kasama, Ibaraki, Kasama. Therefore, Nishiibaraki District was dissolved as a result of this merger.

District Timeline

* February 15, 1958 - The town of Kasama gained city status. * February 1, 2005 - The village of Nanakai, Ibaraki, Nanakai was merged with the town of Jōhoku, Ibaraki, Jōhoku, and village of Katsura, Ibaraki, Katsura (both from Higashiibaraki District, Ibaraki, Higashiibaraki District), to create the town of Shirosato, Ibaraki, Shirosato (in Higashiibaraki District, Ibaraki, Higashiibaraki District). * October 1, 2005 - The town of Iwase, Ibaraki, Iwase was merged with the town of Makabe, Ibaraki, Makabe, and the village of Yamato, Ibaraki, Yamato (both from Makabe District, Ibaraki, Makabe District) to create the city of Sakuragawa, Ibaraki, Sakuragawa. * March 19, 2006 - The towns of Iwama, Ibaraki, Iwama and Tomobe, Ibaraki, Tomobe were merged into the expanded city of Kasama, Ibaraki, Kasama. Therefore, Nishiibaraki District was dissolved as a result of this merger. Former districts of Ibaraki Prefecture {{Ibaraki-geo-stub