Picton is a small town in the Macarthur Region of New South Wales, Australia, in the Wollondilly Shire, in south-western Sydney.

[2] Picton developed when a new line of the Great South Road was cut over the Razorback Range from Camden, and especially after the railway arrived in 1863.

It was named for Sir Thomas Picton, a British army officer (described by historian Alessandro Barbero as "respected for his courage and feared for his irascible temperament") who died at the Battle of Waterloo.

One house was destroyed by bushfire in the Nangarin Estate located on the western outskirts of Picton, from a fire front originating from Lakesland in September 2006.

Ghost tours are conducted in some of the historic buildings and inside the disused railway tunnel on Redbank Range, where residents and visitors claim to have experienced paranormal activity.

[15] Picton has a humid subtropical climate (Cfa) with hot summers and cool to mild winters that are often warm by day.