Sylvania Waters is a suburb, in southern Sydney, in
the state of New South Wales,
Australia 21 kilometres south of the Sydney central
business district in the local government area of
Sutherland Shire.

Sylvania Waters surrounds Gwawley Bay on the
southern side of the Georges River.
Sylvania is a separate suburb to the west, and
Sylvania Heights is a locality within that suburb.
Much of the waterfront areas of Sylvania
Waters were reclaimed from Gwawley Bay. Many
streets and houses are built on artificial islands.
The main road in Sylvania Waters,
Belgrave Esplanade, essentially stretches from
Tom Uglys Bridge to Captain Cook Bridge - two of
the three main northern entry points for the
Sutherland Shire across the Georges River.