There are significant introduced populations in the Canterbury region of New Zealand's South Island.
In 1870, several Bennett's wallabies were transported from Tasmania to Christchurch, New Zealand.
Two females and one male from this stock were later released about Te Waimate, the property of Waimate's first European settler Michael Studholme.
 The year 1874 saw them freed in the Hunters Hills, where over the years their population has dramatically increased.
Bennett's wallabies are now resident on approximately 350,000 ha of terrain centred upon the Hunters Hills, including the Two Thumb Ranges, the Kirkliston Range and the Grampians.
They have been declared an animal pest in the Canterbury region and land occupiers must contain the wallabies within specified areas.
Bennett's wallaby is now widely regarded as a symbol of Waimate.

There are also colonies in England:in the Peak District, Derbyshire, and the Ashdown Forest in East Sussex.
These were established ca.
1900.
There are also other smaller groups frequently spotted in West Sussex and Hampshire.

There is a small colony of red-necked wallabies on the island of Inchconnachan, Loch Lomond in Argyll and Bute, Scotland.
This was founded in 1975 with two pairs taken from the Whipsnade Zoo, and had risen to 26 individuals by 1993.
There is also a large group of approximately 250 red-necked wallabies living wild on the Isle of Man, which are the descendants of a pair that escaped from a wildlife park on the island in the 1970s, as well as from subsequent escapes.

The Baring family, who owned Lambay Island (250 ha (620 acres)), off the eastern coast of Ireland introduced red-necked wallabies to the island in the 1950s and 1960s.
In the 1980s, the red-necked wallaby population at the Dublin Zoo was growing out of control.
Unable to find another zoo to take them, and unwilling to euthanize them, zoo director Peter Wilson donated seven individuals to the Barings.
The animals have thrived since then and the current population is estimated to be between 30–50.

In France, in the southern part of the Forest of Rambouillet, 50 km (31 mi) west from Paris, there is a wild group of around 50-100 Bennett's wallabies.
This population has been present since the 1970s, when some individuals escaped from the zoological park of Émancé after a storm.
In Germany, around 10 wallabies live as a wild population in the federated state of Mecklenburg-Vorpommern since 2001.

In October 2014, three captive Bennett's wallabies escaped into the wild in northern Austria and one of them roamed the area for three months before being recaptured, surviving the harsh winter.
The case attracted media attention, as it humorously defeated the popular slogan "There are no kangaroos in Austria."
There are significant introduced populations in the Canterbury region of New Zealand's South Island. In 1870, several Bennett's wallabies were transported from Tasmania to Christchurch, New Zealand. Two females and one male from this stock were later released about Te Waimate, the property of Waimate's first European settler Michael Studholme.  The year 1874 saw them freed in the Hunters Hills, where over the years their population has dramatically increased. Bennett's wallabies are now resident on approximately 350,000 ha of terrain centred upon the Hunters Hills, including the Two Thumb Ranges, the Kirkliston Range and the Grampians. They have been declared an animal pest in the Canterbury region and land occupiers must contain the wallabies within specified areas.Bennett's wallaby is now widely regarded as a symbol of Waimate.
There are also colonies in England:in the Peak District, Derbyshire, and the Ashdown Forest in East Sussex. These were established ca. 1900. There are also other smaller groups frequently spotted in West Sussex and Hampshire.
There is a small colony of red-necked wallabies on the island of Inchconnachan, Loch Lomond in Argyll and Bute, Scotland. This was founded in 1975 with two pairs taken from the Whipsnade Zoo, and had risen to 26 individuals by 1993. There is also a large group of approximately 250 red-necked wallabies living wild on the Isle of Man, which are the descendants of a pair that escaped from a wildlife park on the island in the 1970s, as well as from subsequent escapes.
The Baring family, who owned Lambay Island (250 ha (620 acres)), off the eastern coast of Ireland introduced red-necked wallabies to the island in the 1950s and 1960s. In the 1980s, the red-necked wallaby population at the Dublin Zoo was growing out of control. Unable to find another zoo to take them, and unwilling to euthanize them, zoo director Peter Wilson donated seven individuals to the Barings. The animals have thrived since then and the current population is estimated to be between 30–50.
In France, in the southern part of the Forest of Rambouillet, 50 km (31 mi) west from Paris, there is a wild group of around 50-100 Bennett's wallabies. This population has been present since the 1970s, when some individuals escaped from the zoological park of Émancé after a storm. In Germany, around 10 wallabies live as a wild population in the federated state of Mecklenburg-Vorpommern since 2001.
In October 2014, three captive Bennett's wallabies escaped into the wild in northern Austria and one of them roamed the area for three months before being recaptured, surviving the harsh winter. The case attracted media attention, as it humorously defeated the popular slogan "There are no kangaroos in Austria."
Red-necked wallaby