Skype for Mac OS X
Uninstall Skype
To uninstall Skype, quit Skype, open your Applications folder and sadly drag your copy of Skype to the trash. Your user information, including your Contacts list and call log, is retained on your computer in case you should decide to try Skype again at a later date. These files can be found in “username/Library/Skype”. This directory containing harmless data can also be deleted.