The Louth to Bardney Line was an English railway line built by the Louth and Lincoln Railway Company, in Lincolnshire, England. It opened in stages between 1874 and 1876, after serious difficulties in raising subscription capital, and following alteration to the planned route. It was hoped to serve large reserves of ironstone along its route, but the deposits were not as large as hoped, and the line was never financially successful.
The passenger service closed in 1951, and the residual goods service closed in stages from 1956 to 1960.