The A6121 is a short cross-country road in the counties of Lincolnshire and Rutland, England. It forms the principal route between Bourne and Stamford and the A1 in Lincolnshire, continuing on through Ketton in Rutland to its junction with the A47 at Morcott. Its south-western end is at 52°35.5860′N 0°38.0820′W and its north-eastern end is at 52°45.9120′N 0°24.0660′W. The road has increased in importance with the rapid expansion of housing in this part of South Kesteven.

The A47 is a major trunk road in England linking Birmingham to Lowestoft, Suffolk, maintained and operated by National Highways. Most of the section between Birmingham and Nuneaton is now classified as the B4114. From Peterborough eastwards, it is a trunk road.