Haslington is a village and civil parish in the unitary authority of Cheshire East and the ceremonial county of Cheshire, England. It lies about 2 miles (3.2 km) north-east of the much larger railway town of Crewe and approximately 4 miles (6.4 km) south of Sandbach. The village was originally bisected by the A534 road that links Crewe with Sandbach, however, this road has now been re-routed to bypass the village to the north-west. The village is also a close neighbour to a number of small towns and villages (including Alsager, Wheelock, Winterley), and is approximately 6 miles (9.7 km) from the Elizabethan market town of Nantwich. The village lies approximately 11 miles (18 km) north-west of the Staffordshire Potteries .

Haslington is not mentioned in the Domesday Book of 1086, so it is presumed that either the village came into existence afterwards, or was insignificantly small. The earliest mention of Haslington is in 1256, when it was called "Hesinglinton". The name is possibly derived from the phrase "tun among hazels", or "enclosure amongst hazel trees". Often, with settlement names ending with "tun" or "ton", such as Haslington, this indicates origins of a farm enclosed with a moat or fence. Later variations of the name were 'Halinton'; (1292, 1536), "Hasillinton" (1280), "Haselin(g)ton(e)" (1293 to 1586) and "Hass(e)lyn(g)ton" (1307 to 1432). Alternatively it has been suggested the Haslington's name derives from Thomas de Heslynton, an archer in the King's Bodyguard and a resident of Haslington, however this version of events is often discredited due to de Heslynton's life being after the earliest mentions of the village.

In the reign of Edward I, the Barony of Wich-Malbank (now known as Nantwich) was divided up between the heirs of the last Baron who held that title, William. Haslington was given to Auda Vernon of Shipbrooke, whose descendants included the founder and early residents of Haslington Hall.

During the First English Civil War, on 27 December 1642,(?) there was a skirmish between the Royalists and the Parliamentarians that took place on the southern outskirts of the village at a place called Slaughter Hill. The Parliamentarians—also known as the Roundheads—won the battle. Local legend says the battle caused the brook nearby to turn red from the blood spilt. A sword was found embedded in the bank of Valley Brook. Although the macabre name Slaughter Hill suggests it may be named after this skirmish, it may be a corruption of "Sloe Tree Hill". Blackthorn (Prunus spinosa), the fruit of which are sloes, can still be found in the hedgerows down the lane named Slaughter Hill, which adjoins with the neighbouring civil parish of Crewe Green.

Haslington was originally a chapelry within the ancient parish of Barthomley. It was made a separate civil parish in 1866. The parish council has 15 councillors, split between three parish wards: Haslington, Winterley, and Oakhanger. Haslington is the largest of the three wards.

From 1974 the civil parish was served by Crewe and Nantwich Borough Council, which was succeeded on 1 April 2009 by the new unitary authority of Cheshire East. Haslington falls in the parliamentary constituency of Crewe and Nantwich, which was represented by Labour MP Laura Smith. Smith defeated Conservative MP Edward Timpson in the 2017 general election. Timpson had previously represented the constituency since a by-election in May 2008, following the death of Labour MP Gwyneth Dunwoody. The seat was won by Conservative Kieran Mullan in 2019.

The area around Haslington is primarily arable land, though also some dairy farms. The land to the east in Oakhanger consists of peat, whereas in the west, clay. There are two main areas of peat: White Moss and Oakhanger Moss, the latter of which being a Site of Special Scientific Interest. The parish of Haslington features 110 miles of hedges, 10,000 trees and 60 public paths. There was an original Haslington Hall that pre-dated the current one, built around 1220, that was moated. The moat and Hall gradually crumbled away and became a mere, which was only filled in the 20th century. The mere was near what is now Mere Street, off Crewe Road. The nearby village of Winterley, within Haslington's parish, is home to Winterley Pool, a modest lake by the roadside of Crewe Road.

Areas of land within Haslington, and also nearby Crewe Green and Crewe, are owned by the Duchy of Lancaster. The Duchy of Lancaster is a royal duchy, which provides income to the monarch; the Duke of Lancaster is Charles III.