西北瑞士大区（德语：Grossregion Nordwestschweiz）是瑞士联邦的七个大区之一。根据瑞士联邦统计署的定义，西北瑞士大区由位于瑞士的三个联邦州组成：巴塞尔城市州、巴塞尔乡村州和阿尔高州。
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