"Mizune" may refer to:
- Mizune Family: The family of Witch sisters capable of using Merge to combine themselves into a singular entity. They all share the same surname and equally recognize themselves as "Mizune" when spoken to.
- Five Body Merge Mizune: One of the combined forms of the Mizune sisters when using Merge. Although the Five Body Merge Mizune is the only one to have been officially named, other combinations exist such as the Two Body Merge Mizune & Three Body Merge Mizune. Although called Mizune too, the merged entities refer to themselves as a numbered "Combination" of "Mizunes".