Minecraft wiki entry for Saved_data_Dropbox_guide, associated text: In MacOS, the Minecraft data folder is located in your Username > Library > Application Support folder. You can get here quickly by opening Finder > Go > Go To Folder > type ~/Library/Application Support/minecraft. For future reference, it's best to make an alias for this folder and copy it to your desktop. NOTE: Mountain Lion hides the user's Library folder. Hold down the option key and see the Library item appear in the GO menu.