This is Luke Skywalker in his Tatooine outfit. Tatooine is a desert planet and it is where Anakin Skywalker was raised before Qui-Gon Jinn spotted his potential and took him to Coruscant to train as a Jedi.
Tatooine is where Luke came to meet C3P0 and R2-D2 and then Obi-Wan Kenobi. These meetings would be the start of Luke’s adventures which would eventually end up with the battle between himself and his father, Darth Vader and the Emperor.
The Luke Skywalker LEGO minifigure comes in an array of outfits and hair styles as he was obviously one of the key characters in the film. There are actually two versions of this same figure, this one differs by having white pupils in the eyes and is more common than the one with normal LEGO black eyes.