Elderslie is a suburb of the Macarthur Region of Sydney in the state of New South Wales, Australia in Camden Council.

It has a small local shop, high school, primary school, skateboard park, netball courts, cricket, Australian Football (AFL) oval, Rugby League oval, a BMX track and a historic house, John Oxley Cottage, which was built in the 1890s and converted into the Camden Visitors' centre in 1989.

In 1805, a small hut was built at Elderslie near the ford on the Nepean River to house two constables assigned to keep an eye on the cattle.

After the land was cleared, it was used for farming for most of the next 200 years until Sydney's suburban sprawl reached the town of Camden and modern suburbs like Elderslie were subdivided into housing blocks.

[1] Elderslie lies in the south ward of Camden Council, currently (March 2021) represented by Russell Zammit, Eva Campbell and Paul Farrow.