Lord of the Rings director Peter Jackson said both Sorvino and Ashley Judd were "blacklisted" following conversations with Weinstein's company.
Both actresses have claimed the media mogul sexually harassed them.
Weinstein has denied allegations of misconduct, and of blacklisting the actresses.
The Lord of the Rings trilogy was initially in development with Weinstein's Miramax company, before being passed to New Line Cinema.
In an interview with Stuff.co.nz this week, Jackson said he was interested in casting both women in the blockbuster franchise.