Just Do It' (7 letters) The Nike logo is composed of two parts: the iconic swoosh and the slogan 'Just Do It'. The swoosh is a curved line that was designed by Carolyn Davidson in 1971 and has become one of the most recognizable logos in the world. The slogan 'Just Do It' was created in 1988 and has become a popular phrase used to motivate people to take action. Together, these two elements make up the Nike logo, which is recognized around the world as a symbol of quality and excellence.