Are any of the same actors in Cabin in the Woods and Knock on the Cabin?

No, none of the same actors are in both Cabin in the Woods and Knock on the Cabin. Cabin in the Woods is a 2012 American horror comedy film directed by Drew Goddard and written by Goddard and Joss Whedon, while Knock on the Cabin is a 2020 British drama film directed by Will Gardner and written by Will Gardner and Danny Mulheron.

Cabin in the Woods stars Chris Hemsworth, Kristen Connolly, Anna Hutchison, Fran Kranz, Jesse Williams, Richard Jenkins, and Bradley Whitford. Knock on the Cabin stars Peter Mullan, Olivia Williams, Jack Falahee, Ella Hunt, Nico Mirallegro, and Rebecca Calder. As you can see, none of the actors are the same in both films.

Cabin in the Woods is a horror comedy, while Knock on the Cabin is a drama. The two films are completely different in terms of their plot, genre, and characters, so it makes sense that none of the same actors appear in both films.