List of islands of Perth, Western Australia

Perth, Western Australia hosts a variety of unique and biologically diverse habitats found nowhere else on Earth. Many of these habitats include islands. Islands provide habitat and safe refuge for endangered native fauna as they are free of invasive species and the pressures of human development. Coastal islands of this region heavily feature limestone as their base structure, while the inland islands are predominantly made of serpentine soil.

Coastal islands

Name	Location	Locality	Size	Distance from mainland	Notes
Rottnest Island		–	1,900	17	Home to the largest population of quokkas in the world.
Garden Island		–	1,200	2.2	Home to a tammar wallaby population. One of the Royal Australian Navy's main bases is also located on the island.
Carnac Island		–	19	6.9	High abundance of tiger snakes.
Penguin Island		Shoalwater	12.5	0.7	Home to the largest population of fairy penguins in the world.
Seal Island		Shoalwater	1.4	0.9	Home to a small population of Australian sea lions.
Bird Island		Peron	0.8	0.4	Part of the Shoalwater Islands Marine Park.
Shag Island		Shoalwater	0.4	0.85	Part of the Shoalwater Islands Marine Park.
Little Island		Hillarys	0.1	1.9	Part of the Marmion Marine Park.
Trigg Island		Trigg	0.1		Part of the Marmion Marine Park.

Name	Location	Size	Distance from Rottnest Island	Notes
Dyer Island		7,000	730	Australian sea lions sun themselves on the northern beach.
Green Island		1,800	60	Lies within the Kitson Point snorkelling trail.
Wallace Island		1,300	140	Known for seabirds resting on the island.
Parakeet Island		800	30	Lies within a popular snorkelling area near Parakeet Bay.

Inland islands include those located in the Swan River, Canning River, and Beeliar Wetlands.

Name	Location	Locality	Size	Notes
Heirisson Island		East Perth	28.5	Originally several smaller islands. Home to a small population of western grey kangaroos.
Kuljak Island		Ascot	28	The surrounding wetlands are a Bush Forever site.
Lake Island		Joondalup	14	Crucial nesting site for the endangered Carnaby's black cockatoo.
Malup Island		Joondalup	11	Part of Yellagonga Regional Park.
Ron Courtney Island		Ascot	1.6	Good fishing spot for catching mulloway, tailor and black bream.
Monger Island		Wembley	1.3	Created in the 1960s as a bird refuge.
Elizabeth Quay Island		Perth	0.6	Artificial islet in Elizabeth Quay with playground and kiosk.
Jualbup Island		Shenton Park	0.3	Used as a feeding, resting and breeding site for a variety of native water birds.