Nacton is a civil parish in the Suffolk Coastal region of Suffolk, England, taking its name from the village within it. The parish is bounded by the neighbouring parishes of Levington to the east and Bucklesham in the north. It is located between the towns of Ipswich and Felixstowe.
Nacton abuts the River Orwell opposite the village of Pin Mill. Riverside features covered by this parish are (from east to west) Buttermans Bay, Potter's Point, Downham Reach, Mulberry Middle and Pond Oose.
Nacton parish is the mother for the villages of Levington and Bucklesham and was sufficiently large to have a workhouse. This was used by Amberfield School as its main building until it closed in 2011. The more adventurous explorer can find the old burial ground opposite the entrance to lane leading down to the school. The site of Alnesbourne Priory is close to Nacton.
The village public house is the Shepherd and Dog, outside the village proper alongside the A1156 (formerly A45) road at the far northern edge of the parish.
Nacton's name was used as a word coined by Douglas Adams to describe the letter 'N' when inserted between two other words as an abbreviation for 'and', as in rock 'n' roll and fish 'n' chips.