Arlecdon and Frizington is a civil parish in west Cumbria, England. The parish had a population of 3,678 in the 2001 census, decreasing to 3,607 at the 2011 census.

The parish includes Arlecdon, Frizington, Rowrah and Asby. It constituted an urban district from 1894.

In 1919 John Adams led a successful election challenge to the sitting members of Arlecdon and Frizington District Council. This established the first all-Labour council to be elected in England. Adams held the office of Chairman of the Arlecdon and Frizington Urban District Council from 1919 to 1923.

In 1934, it became part of Ennerdale Rural District, which was later subsumed in 1974 into Copeland Borough Council, and in 2023 became incorporated into the unitary authority of Cumberland.

Arlecdon and Frizington was within the Copeland UK Parliamentary constituency until 2024 when the seat was abolished further to the completion of the 2023 Periodic Review of Westminster constituencies and the parish became part of the Whitehaven and Workington constituency represented by Josh MacAlister of the Labour Party since 2024.

Before Brexit, it was in the North West England European Parliamentary Constituency.

The Parish Council is named Arlecdon & Frizington Parish Council.

The parish falls in the electoral ward of Arlecdon. This ward stretches south to Weddicar and has a total population taken at the 2011 census of 1,500.

• Listed buildings in Arlecdon and Frizington
• John Adams, 1st Baron Adams

• Cumbria County History Trust: Arlecdon (nb: provisional research only - see Talk page)