Myrmecia can refer to:
- Myrmecia (alga), genus of algae associated with lichens
- Myrmecia (ant), genus of ants called bulldog ants
- Myrmecia (skin), a kind of deep wart on the human hands or feet
See also
edit- Copromorpha myrmecias or C. myrmecias, a species of moth
- Myrmeciinae, a subfamily of ant