Morton County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 33,291, making it the sixth most populous county in North Dakota. Its county seat is Mandan. Morton County is included in the Bismarck, ND, Metropolitan Statistical Area.

The Dakota Access Pipeline Protests, also known by the hashtag #NoDAPL, were a series of grassroots Native American protests against the construction of the Dakota Access Pipeline in the northern United States that began in April 2016. Protests ended on February 23, 2017 when National Guard and law enforcement officers evicted the last remaining protesters.