齐巴赫县（Ziebach County, South Dakota）是美国南达科他州中西部的一个县。面积5,105平方公里。根据美国2000年人口普查，共有人口2,519人。县治杜普里 （Dupree）。

成立于1911年2月2日。县名纪念准州议员、州制宪大会成员法兰西斯·马里昂·齐巴赫 （Francis Marion Ziebach）。全县所有土地分别在两个印第安人保留地内。

Ziebach County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 2,801. Its county seat is Dupree. It is the last county in the United States alphabetically.

The county's per-capita income makes it the fourth poorest county in the United States. However, another study states that the county is the poorest in the nation.