River Aln

River Aln
The River Aln near Alnmouth
Location within Northumberland
Location
CountryUnited Kingdom
CountyNorthumberland
TownsAlnham, Whittingham, Alnwick, Lesbury, Alnmouth
Physical characteristics
Source 
  locationAlnham
  coordinates55°23′31″N 2°00′25″W / 55.392°N 2.007°W / 55.392; -2.007
Mouth 
  location
Alnmouth
  coordinates
55°23′05″N 1°36′43″W / 55.3848°N 1.6120°W / 55.3848; -1.6120
Length40 kilometres (25 mi)

The River Aln (/ˈæl(ə)n/) runs through the county of Northumberland in England. It rises in Alnham in the Cheviot Hills and discharges into the North Sea at Alnmouth on the east coast of England.

The river gives its name to the town of Alnwick and the villages of Alnmouth and Alnham. For part of its route, directly upstream of Alnwick, the river flows through Hulne Park.