The forthcoming movie is scheduled to release in October next year and will be directed by "Don't Breathe" helmer Fede Alvarez.
The first movie originally starred Rooney Mara as tattoed hacker Lisbeth Salander and Daniel Craig as journalist Mikael Blomkvist.
However, the sequel will reportedly feature an entirely new cast.
Portman, Johansson and Alicia Vikander are among the names being considered to take the role of the tattooed hacker in the upcoming movie, reports aceshowbiz.com.
Based on David Lagercrantz's novel of the same name, "The Girl in the Spider's Web" is co-written by Alvarez alongside Steven Knight and Jay Basu.