Dalyellup, (pronounced dal-YEL-up), is an outer northern suburb of the Shire of Capel local government area.

The suburb was established in 1999 when the Department of Housing and Works entered into a joint venture with Satterley Property Group to develop Dalyellup Beach Estate, a master-planned community which was expected to yield 3,000 lots by its completion in 2012.

Two large areas within the suburb were set aside as open space - about 100 hectares (250 acres) of pristine tuart forest, officially named the Usher-Dalyellup Regional Park in 2003, with an interpretative walkway leading to Ocean Drive in neighbouring Usher which was opened on 8 October 2007 by the Minister for the South West,[2] and about 120 hectares (297 acres) of dunes and foreshore to the south.

Dalyellup Primary School opened in 2001 in the local shopping centre with 91 students, moving into its own premises in April 2004.

[8] In 2009 it was reported that a titanium dioxide refining company called Millennium Inorganic Chemicals had been dumping waste at a Dalyellup site for the past two decades.