SK may refer to:
Skype (/ˈskaɪp/) is an instant messaging app that provides online text message and video chat services.
The skull is a bony structure that forms of the head in most vertebrates. It supports the structures of the face and provides a protective cavity for the brain.
Skateboarding is an action sport which involves riding and performing tricks using a skateboard. Skateboarding can also be considered a recreational activity, an art form, a job, or a method of transportation.
Sky Sports is a group of sports television channels operated by the satellite pay-TV company Sky plc. Sky Sports is the dominant subscription television sports brand in the United Kingdom and Ireland.
Skopje (Macedonian: Скопје, [ˈskɔpjɛ], Bulgarian: Скопие) is the capital and largest city of the Republic of Macedonia.
Sky UK Limited (formerly British Sky Broadcasting and BSkyB) is a telecommunications company which serves the United Kingdom.
Skyfall is the 23rd James Bond film produced by Eon Productions and released in 2012. It features Daniel Craig in his third performance as James Bond, and Javier Bardem as Raoul Silva, the film's villain.