Johngarthia
Johngarthia is a genus of crabs in the land crab family Gecarcinidae, formerly included in the genus Gecarcinus, and containing the following five species:
| Image | Name | Distribution |
| Johngarthia cocoensis Perger, Vargas & Wall, 2011 | eastern Pacific Ocean: Cocos Island off Costa Rica | |
| Johngarthia lagostoma | southern Atlantic Ocean: Ascension Island, Ilha Trindade, Fernando de Noronha & Atol das Rocas | |
| Johngarthia malpilensis | eastern Pacific Ocean: Malpelo Island | |
| Johngarthia planata | eastern Pacific Ocean: Gulf of California, Revillagigedo Islands, Costa Rica, Colombia & continental mainland beaches of Mexico | |
| Johngarthia weileri | eastern Atlantic Ocean: coast of Cameroon and islands of the Gulf of Guinea | |
| Johngarthia oceanica Perger 2019 | eastern Pacific Ocean: Socorro Island, Clipperton Island |