Heirisson Island, Artificial island in Perth, Australia.

Heirisson Island is an artificial island in the Swan River between East Perth and Victoria Park, connected by a bridge system. The island covers roughly 286,000 square meters and features shorelines where western grey kangaroos make their home.

Willem de Vlamingh was the first European to reach the area, in January 1697, stopping where mudflats blocked his longboats. The islands were named in June 1801 after François-Antoine Boniface Heirisson, a midshipman on the Naturaliste during Nicolas Baudin's expedition, which made the first maps of the Swan River. By the 1940s dredging and reclamation had merged six small islands into one.

The Whadjuk Noongar name Matagarup means 'leg deep', describing the shallow river crossing over the mudflats. The Beeloo people, a Whadjuk subgroup, held the crossing and gave other groups right of passage across the river. The name was kept for the single island after reclamation.

A walking path of roughly 2 kilometers circles the island, giving visitors chances to watch the kangaroos in their natural setting. The route is easy to walk and offers several viewing spots along the water's edge.

The Yagan statue was erected by the Government of Western Australia in September 1984; in 1997 its head was removed twice by vandals. Five female western grey kangaroos were released on the island in 1998, followed by a female with a male joey in 2000.