Cyclones are magical phenomenons on ABC's Once Upon a Time. They can be used to transport people and objects as large as houses to other worlds.
- Regina Mills, Snow White, David Nolan, Zelena Mills, Robin Hood, Granny, Grumpy, Doc, Killian Jones, Roland, Belle, Happy, Neal Nolan — travels from Storybrooke to the Enchanted Forest
- Zelena Mills — travels from Storybrooke to Oz
- Ruby Lucas — travels from Oz to the Underworld
- These cyclones are based on the cyclone from The Wonderful Wizard of Oz.
- S3, E16: "It's Not Easy Being Green" (flashback)
- S3, E18: "Bleeding Through" (flashback)
- S3, E20: "Kansas" (flashback)
- S5, E01: "The Dark Swan"
- S5, E11: "Swan Song"
- S5, E17: "Her Handsome Hero"
- S5, E18: "Ruby Slippers" (flashback)
- S6, E18: "Where Bluebirds Fly"