Mandan \m(a)-ndan, man-dan\ as a boy's name is of Native American Indian origin. Name of a tribe native to the upper Missouri River which had developed high levels of material culture, but were almost wiped out due to smallpox in 1837. A city in North Dakota is named after them.
Baby names that sound like Mandan are Manton and Manten. Other similar baby names are Landan, Chandan, Landon, Landyn, Landin, Landen, Malden, Maldon, Mandel, Marden, Mardyn, Mardon, Meldan and Randon.