Colyton, New South Wales Australia, is located on the easternmost side of the Penrith Local Government Area.

Its boundary is Ropes Creek, the Great Western Highway, Marsden Road and the M4 Motorway. Colyton is within the greater regional locality of St Marys. This suburb is mainly residential, featuring large sporting fields, a primary school, high school, shopping centre and a Life Education Centre. There is some industrial activity along Roper Road. With convenient access to both the Great Western Highway and the M4 Motorway, Colyton offers easy able to travel to work and to leisure activities.

Colyton is one of the older established suburbs with older homes on large blocks of land. Historically, the name Colyton generally referred to the area east of Ropes Creek. The present site of Colyton was traditionally known as St Marys.

For visitor Information contact the Penrith Valley Visitor Information Centre.