Sigourney Weaver has been named the 2016 recipient of the Jane Alexander Global Wildlife Ambassador Award.
The honour was announced by the Indianapolis Zoo on Tuesday.
The 66-year-old portrayed primatologist Dian Fossey in the 1988 movie Gorillas In The Mist.
Sigourney, who is also an honorary chairwoman of the Dian Fossey Gorilla Fund International, starred in Gorillas Revisited for the BBC and Animal Planet in 2005.
In a statement, the actress said: "Our children deserve to inherit a world of wildlife. And if countries and politicians can join forces to save the great apes and their habitats, then there is hope that gorillas will be around for generations to come."
This follows the news that Sigourney, best known for her role as Ellen Ripley in Alien and its sequels, will receive the Donostia lifetime achievement award at the 64th San Sebastian International Film Festival.
Sigourney's screen credits include Ghostbusters, Ghostbusters II, Avatar and Finding Dory. Her latest movie is JA Bayona's A Monster Calls, with a cast that also includes Liam Neeson.
A Monster Calls is the third film in the Spanish film-maker's trilogy of stories about mothers and their children. The first two were The Orphanage (2007) and The Impossible (2012).
JA Bayona will be at the helm of the Jurassic World sequel slated for release in 2018.