Dalyellup, (pronounced Dal-yellup), is an outer southern suburb of Bunbury, a city in Western Australia, located within 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 is expected to yield 3,000 lots by its completion in 2012. The area is embroiled in a controversy over toxic waste dumping.

In the original advertising campaign, Dalyellup was heavily promoted as "A village in the Forest by the Sea". Along this theme the local private Lutheran school is called "Ocean Forest".

In the 2006 census, Dalyellup had a population of 3,239. This was an increase from the 2001 census population of 352. The estimated resident population in 2013 is 8,200 according to the Shire of Capel Local Profile < http://www.capel.wa.gov.au/Portals/0/Doc/Profile/Shire%20Profile%202013.pdf >

Dalyellup residents had a median age of 29—well below the median of 37 in the Bunbury statistical district—and the median individual income was above-average for the region—$683 per week compared with $492 per week. The population of Dalyellup was predominantly Australian-born—74.9% as at the 2006 census—while significant English (7.2%) and South African (3.6%) minorities were identified. In the 2006 census, 1.73% of residents identified as Indigenous Australians.

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