Fall
Super Mario Boards
Technetium
Carissa
Autumn. I'm from the UK so Autumn is the more commonly used name for it here, I still very vaguely remember being confused by the season being referred to as Fall when I first heard that on the internet or in TV shows.
Cloudwalker
I just call it the opposite of Spring
(Autumn)
(Autumn)
Shmalu Sniffer
Fall but I only call it autum when it I want to feel fancy or festive!