Butler and Baccarin are returning as John and Allison Garrity, as the Garrity family must leave the Greenland bunker and find a new home across Europe's frozen wasteland.
Director Ric Roman Waugh is also returning to helm the sequel from a script by Greenland writer Chris Sparling.
Butler is also producing through G-Base along with Alan Siegel. Basil Iwanyk and Brendon Boyega are also producing through Thunder Road Pictures, along with Sebastien Raybaud and John Zois of Anton.
Greenland was released in August and earned over $52 million worldwide during the COVID-19 pandemic while many theaters were closed.