Mississippi Highway 311 (MS 311) is a state highway located in Marshall County, Mississippi. The route runs 12.960 mi (20.857 km) from MS 7 in Holly Springs north to U.S. Route 72 (US 72) in Mount Pleasant. The route is a two-lane undivided road its entire length and passes through rural areas of woods and farms. MS 311 was designated onto its current alignment in 1957. The road was fully paved from a gravel road by the 1960s.

MS 311 begins at an intersection with MS 7 in the northern part of Holly Springs, heading northwest on two-lane undivided Mount Pleasant Road. The road passes through wooded areas with some homes and businesses as it comes to an intersection with the Holly Springs Bypass and makes a left turn to continue to the northwest and leaves Holly Springs. At this point, the route enters more rural areas of woodland and farmland, turning more to the north and becoming an unnamed road. The road enters a dense forest before continuing back into agricultural areas with a few residences. Farther north, it heads near a few housing subdivisons before reaching the community of Mount Pleasant. MS 311 passes a few homes and businesses within Mount Pleasant before reaching its northern terminus at the US 72 intersection. At this point, the road continues north as Rossville Road. MS 311 is legally defined in Mississippi Code § 65-3-3.

MS 311 was designated in 1957 for a gravel road connecting Holly Springs to Mt. Pleasant. By 1960, the route was paved expect for a small portion halfway between Holly Springs and Mt. Pleasant. In 1965, the remaining portion of MS 311 was paved.

The entire route is in Marshall County.