Dioxys may refer to:
*
''Dioxys'' (bee), a genus of bees in the family Megachilidae
*
''Dioxys'' (alga), a genus of algae in the family
Characiopsidaceae
Characiopsidaceae is a family of algae
Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct c ...
{{Genus disambiguation