Haddiscoe is a village and civil parish in the South Norfolk district of the English county of Norfolk. The parish also includes the small hamlet of Thorpe-next-Haddiscoe.

Haddiscoe is located 7 miles (11 km) north-west of Lowestoft and 16 miles (26 km) south-east of Norwich.

Haddiscoe's name is of Viking origin and derives from the Old Norse for Haddr's wood.

In the Domesday Book, Haddiscoe is listed as a settlement of 70 households in the hundred of Clavering. In 1086, the village was divided between the estates of King William I, Roger Bigod, Ralph Baynard and Robert, son of Corbucion.

The only preceptory of the Knights Templar in Norfolk stood in the parish from 1218 to 1312, though the precise site of the building is unknown.

In 1827, the Haddiscoe Cut was dug through the parish to provide a more navigable water route from the River Yare to the North Sea.

Haddiscoe Railway Station opened in 1904 and still operates as a stop on the Lowestoft section of the Wherry Line. The station was preceded by an older Haddiscoe Railway Station which sat on the Norfolk Railway between 1847 and 1904.

Norfolk's only remaining First World War pillbox stands in the village.