The sculptures, which can been seen in Green Park, St James's Park and Berkeley Square, are part of the CoExistence campaign organised by the Elephant Family Trust.
The international NGO hopes to highlight the need for coexistence with wild animals after lockdowns during the COVID-19 pandemic slowed down human activity and helped some threatened species to recover.
''The herd arrives in the UK making a bold statement about the ever-growing need for CoExistence on our planet,'' Elephant Family write on their website.
Adding: ''This 100-strong herd reminds us that when we lighten our footprint, wildlife bounces back."
As well as being a public exhibition, the models are also on sale for 30,000 pounds ($42,000) each to raise funds.
Elephant Family will use the money raised for conservation activities, such as planting crops for elephants to eat on the edges of farmland to distract them from food grown for humans.
After launching in May, the sculptures will be on display in the British capital until July 23.