Earsham is a village and civil parish in the English county of Norfolk.

Earsham is located 1.1 miles (1.8 km) west of Bungay and 13 miles (21 km) south-east of Norwich. The village is located close to the border between Norfolk and Suffolk, and the River Waveney.

Earsham's name is of Anglo-Saxon origin and derives from the Old English for the homestead or settlement of an earl or built around a hill.

Earsham Mill has stood in some form in the village since the time of the Anglo-Saxons, using the River Waveney to grind wheat into flour. The mill building still exists today.

In the Domesday Book, Earsham is listed as a settlement of 69 households in its own hundred. In 1086, the village was part of the East Anglian estates of King William I.

Earsham Hall was built in the Eighteenth Century by John Buxton and was first inhabited by Lt-Col. William Windham. The hall was remodelled in the Georgian style by Sir John Soane and exists today as a venue for wedding receptions and antiques dealing.

During the First World War, parts of Earsham parish were used as a landing strip for airplanes of the Royal Flying Corps. During the Second World War, parts of the abandoned airfield and Earsham Hall were used as bomb storage for the United States Army Air Forces.

According to the 2021 census, Earsham has a total population of 935 people which demonstrates an increase from the 882 people listed in the 2011 census.