Aspatria /əsˈpeɪtriə/ is a town and civil parish in Cumberland, Cumbria, England. The town rests on the north side of the Ellen Valley, overlooking a panoramic view of the countryside, with Skiddaw to the South and the Solway Firth to the North. Its developments are aligned approximately east–west along the A596 Carlisle to Workington road and these extend to approximately 2 miles (3.2 km) in length. It lies about 8 miles (13 km) northeast of Maryport, a similar distance to the Southwest of Wigton, about 9 miles (14 km) north of Cockermouth and 5 miles (8.0 km) from the coast and Allonby. A Roman road leading from "Old Carlisle" to Ellenborough passed through the hamlet.

It is served by Aspatria railway station. Aspatria is located on the fringe of the English Lake District.

The parish church of St Kentigern was rebuilt in 1848. Fragments of masonry and crosses from earlier structures on the same site are preserved there.

Aspatria is an ancient settlement and seems to have been home to a group of Norsemen who fled to the area from Ireland around 900. In 1789, a surgeon by the name of Rigg employed a group of labourers to level a mound called Beacon Hill, situated close behind his house at Aspatria. After reaching a depth of about one metre they dug into a cavity walled around with large stones and found the skeleton of a Viking chief. At the head of the skeleton lay a sword almost five feet in length, with a remarkably broad blade, ornamented with a gold and silver handle. The scabbard of the sword was made of wood, lined with cloth. The workmen also unearthed several pieces of armour, a dirk with a silver studded handle, a golden buckled belt, and a breast plate. The artefacts remain the property of the British Museum. Further finds were made on the same site in 1997 when a mobile phone mast was being constructed.

The manor of Aspatria is part of the ancient barony of Allerdale below Derwent. Awarded by Ranulph de Meschines, grantee of the whole of Cumberland from William the Conqueror, to Waltheof, son of Gospatrick, Earl of Dunbar, from whom the obsolete name of Aspatrick, may have been derived. Upon the division of the estates of William Fitz Duncan, and his wife Alice de Romney, among their three daughters, the manor passed to Alice, the youngest. However, Alice died without issue and the estates passed to an elder sister who had married into the Lucy family. The latter family terminated in a female heir Maud de Lucy. She married Henry Percy, the first Earl of Northumberland, who received the whole of her estates. It remained in this family through eleven generations before passing by the marriage of Lady Elizabeth, sole daughter and heiress of Josceline Percy to Charles Seymour, sixth Earl of Somerset. In recent times it again passed by a female heir to the Wyndham family, from whom it has descended to Lord Leconfield and now Lord Egremont.

The village stands at the northern end of the West Cumberland Coalfield and there have been mines in the area since the 16th century. The opening of the Maryport and Carlisle Railway, in 1842, led to a rapid expansion of the industry. The Brayton Domain Collieries sank five different pits around the town at various times and there were also mines near Mealsgate, Baggrow and Fletchertown. In 1902, a new mine was sunk at Oughterside. The last pit in the town, Brayton Domain No.5, closed in 1940.

In 1870, one of England's first farmers' co-operatives, the Aspatria Agricultural Cooperative Society was established here with offices in the market square, facing the Aspatria Agricultural College which flourished from 1874 until 1925.

Sir Wilfrid Lawson MP (1829–1906) lived at Brayton Hall just outside the town. He was a committed nonconformist and a leader of the Temperance Movement. His memorial stands in the market square, topped by a bronze effigy of St George slaying the dragon – said to represent the demon drink. Brayton Hall was destroyed by fire in 1918.