Mississippi Highway 198 (MS 198) is a state highway in the U.S. state of Mississippi. The highway is the designation for six former segments of U.S. Highway 98 (US 98) that have been bypassed by newer alignments. These six segments are located in Tylertown, Columbia, Hattiesburg, Beaumont, McLain, and Lucedale. Five of the six sections of MS 198 are two-lane undivided roads that pass through small towns; the exception is the Hattiesburg section which is a four-lane divided highway running through developed areas of the city. The total length of the six sections of MS 198 is 24.937 miles (40.132 km).