Willingham St Mary, also known simply as Willingham, is a village and civil parish in the English county of Suffolk located about 3.5 miles (6 km) south of Beccles in the East Suffolk district. At the 2011 United Kingdom census it had a population of 152. The A145 road cuts through the western section of the parish where it joins with Shadingfield. Sections of the Sotterley estate are included within its western section. A joint parish council covers the parishes of Ellough, Shadingfield, Sotterley and Willingham St Mary. As well as these parishes, Willingham also borders the parish of Weston.