Field of Mars Reserve

Field of Mars Reserve New South Wales
IUCN category Ia (strict nature reserve)
Field of Mars Reserve
Nearest town or city	East Ryde
Coordinates	33°48′51.78″S 151°7′45.03″E / 33.8143833°S 151.1291750°E / -33.8143833; 151.1291750Coordinates: 33°48′51.78″S 151°7′45.03″E / 33.8143833°S 151.1291750°E / -33.8143833; 151.1291750
Established	1979 (1979)
Area	0.46 km2 (0.2 sq mi)
Managing authorities	NSW National Parks and Wildlife Service
Website	Field of Mars Reserve
See also	Protected areas of New South Wales

The Field of Mars Reserve is a protected nature reserve located in the north–western suburbs of Sydney, in the state of New South Wales, Australia. The 50 Ha reserve is a remnant of bushland situated between the Lane Cove and Parramatta rivers within the suburb of East Ryde and near Gladesville, Hunters Hill and Ryde.

The name Field of Mars was given by Governor Phillip, when in January 1792 he granted to two marines the first parcels of land, later expanded to eight parcels in this district. There are a number of theories on the origin of the name, the first is that it was a direct reference to the Roman God of war and the marines' service in the colony. The second theory is that it is named after the Roman Campus Martius, which also has a military connection. The third theory is that it is named after the Champ de Mars in Paris, again with military connections. The name was later used on the parish in the area, which is still today used on land titles. The area became known initially as the Field of Mars Common.

The reserve was a gazetted as a wildlife refuge in 1979 under the National Parks and Wildlife Act (NSW) and features considerable flora and fauna and contains an environmental education centre. The reserve adjoins the Field of Mars Cemetery, bounded by Strangers Creek in the north and Wellington Road in the south.