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
* ''
Copromorpha myrmecias'' or ''C. myrmecias'', a species of moth
*
Myrmeciinae, a subfamily of ant
{{disambiguation, genus