Coordinates: 53°29′19″N 0°06′40″W / 53.488671°N 0.111030°W
Ashby cum Fenby is a village and civil parish in North East Lincolnshire, England, approximately 5 miles (8 km) south from Grimsby, and just east of the A18 road.
In the 2001 Census the population was recorded as 248. The village was recorded in the Domesday Book.
Ashby cum Fenby Grade II* listed Anglican church is dedicated to St Peter. The church has an Early English tower, aisle and belfry, a Decorated chancel, and Perpendicular font. Beneath the tower are remaining parts of a 13th-century rood screen. In the north aisle are monuments to Sir William Wray (d. 1617) and his wife Frances (d. 1647), and to Susanna Drury, sister of Frances.