Craig returns in the murder mystery film as Benoit Blanc, with a whole new cast of suspects, one of whom is played by Hahn.
Speaking at the film’s premiere, Hahn was asked what first went through her mind when Craig walked on to set.
She told Variety: “I think, ‘Woah, I have such a crush on your wife – what am I gonna say to you?”
Craig has been married to Rachel Weisz since 2011.
Hahn also expressed surprise over the James Bond star’s comedy skills, stating: “He turns out to be such a gifted physical comedian that is so surprising to me, and unexpected.
“He’s such a kind and generous ensemble member, and so funny – just the best. I adore him.”
Glass Onion: A Knives Out Mystery also stars Kate Hudson, Edward Norton, Janelle Monáe, Leslie Odom Jr and Ethan Hawke.
The film sees Blanc travel to Greece after being invited to a murder mystery party hosted by a controversial tech billionaire.
Earlier this month, Johnson revealed that Craig’s character is gay.
It will receive a limited one-week cinema release from 23 November before being added to Netflix on 23 December.