Long ago I posted this question on Criterion's forum. The responses were divided, but leaning towards Notorious not being a film noir.
So I thought I'd pose the same question in this forum dedicated to noir. I'm curious as to the general consensus here.
The boundaries of noir change from person to person, and that's part of what makes noir interesting.
As for myself, I feel Notorious is a really well done spy-thriller and not a noir. How about you?