
Colneis[pronunciation?] is ahundred ofSuffolk, consisting of 16,712 acres (67.63 km2).[1]
Running from the south-east outskirts ofIpswich to theNorth Sea coast, the hundred is made up of the land between the estuaries of the riversOrwell andDeben. It is one of the smallest in Suffolk, being only about four miles (6.4 km) wide and ten miles (16 km) long between its border withCarlford Hundred and the cliffs atFelixstowe. It lies within the Colneis Deanery, in the Archdeaconry of Suffolk. It was one of sevenSaxon hundreds grouped together as theWicklaw Hundreds.[2]
Listed asColneyse in theDomesday Book, the origin of the name is not known for sure, though the suffix-ness, meaning "headland" seems probable. Thecol may be the old name of the Deben before its renaming afterDebenham.[3]
The name survives as that of a Junior School in Felixstowe.

Colneis Hundred consists of the following 10 parishes:[1][4]
| Parish | Area (acres) |
|---|---|
| Bucklesham | 1800 |
| Falkenham | 1550 |
| Felixstowe | 1170 |
| Hemley | 1155 |
| Kirton | 1929 |
| Levington | 1660 |
| Nacton | 2380 |
| Trimley St Martin | 1200 |
| Trimley St Mary | 1868 |
| Walton | 2000 |
52°00′N1°18′E / 52.0°N 1.3°E /52.0; 1.3