Dimensions are separate universes that run parallel to each other. While normally kept distinct from each other, parallel dimensions are interconnected and travel between them is possible in certain circumstances. Many dimensions exist in the Mario series. The following is a list of the different dimensions that have been seen/spoken of:
 List of Dimensions
- Subcon, a dimension heavily influenced by dreams.
- Subspace, a alternative/parallel dimension to Subcon. Can be accessed through Potions.