Asgarby and Howell is a civil parish in the North Kesteven district of Lincolnshire, England, consisting of the villages of Asgarby and Howell.
In 1762, the Witham Drainage Act was passed by Parliament, and among other things constituted the Commissioners of Sewers for the Second and Sixth District, which covered the area including Asgarby, Ewerby, Great Hale, Heckington, Holland Fen, Howell, Little Hale and South Kyme.