Eastern Creek is a suburb in Western Sydney, Australia, and is adjacent to Erskine Park and Rooty Hill.

It is most notable for containing the former Wonderland Sydney amusement park, and the Eastern Creek Raceway, which adjoins the Prospect Reservoir, Blacktown.

ORIGIN: The Dharug name for Eastern Creek is rendered variously in English as Warrawarry, Wawirrawarry, Warawara & Waawaar Awaa. HISTORY: On 15/4/1791 a party consisting of Governor Phillip, Captains Collins & Tench, Lieutenant Dawes, Surgeon White, 2 sergeants, 8 privates or marines, Collins's personal servant, two Aborigines and 3 convicts left their camp on the south bank of the Hawkesbury River near present Windsor and continued travelling overland toward Richmond Hill (North Richmond), which had been first sighted by Phillip & Hunter in 6/1789, with the objective of exploring the mountain country beyond. Unfortunately Phillip, thrown by the twists of the Hawkesbury River, calculated Richmond Hill to be some kilometres downstream from its true location. They followed Aboriginal tracks along the banks of the Hawkesbury but encountered a wide stream flowing into the river from the south (now South Creek). It was too wide and deep to cross, so they followed it upstream to a shallower point but soon found another stream entering it from their left (McKenzies Ck). They forded this stream and continued along the south creek for some kilometres until stopped by another stream entering from the east (now Eastern Creek). They crossed here and noted that the south creek was now able to be crossed as well. By this point their objective was far away and on the other side of the Hawkesbury River and the party was dispirited. After camping the night and having breakfast on the bank of the east creek they decided to return directly to Rose Hill (Parramatta). The following month Tench and Dawes led a party of just 4 from Parramatta and avoided the mistakes of Phillip's expedition. From Parramatta they picked up their 'breakfast creek' and followed it to its junction with the east creek, continuing to the Hawkesbury by following the south creek. At the Hawkesbury they were only about 3km from Richmond Hill. They were stopped by 'mountainous country' (probably Kurrajong Heights) after climbing from the Hill. From this account it is easy to see how South Creek, Eastern Creek and Breakfast Creek got their names, although during the first half of the 19th century there was debate over which branch was actually Breakfast or Eastern Creek.