Melodifestivalen 2011 was a Swedish song contest held between February and March 2011. It selected Sweden's 51st song to represent Sweden in the Eurovision Song Contest, and was the 50th edition of Melodifestivalen. Eric Saade, with the song "Popular", won the contest and thus was selected to represent Sweden in the 2011 Eurovision Song Contest.

Melodifestivalen is an annual song competition organised by Swedish public broadcasters Sveriges Television (SVT) and Sveriges Radio (SR). It determines the country's representative for the Eurovision Song Contest, and has been staged almost every year since 1959. In the early 2000s, the competition was the most popular television program in Sweden; it is also broadcast on radio and the Internet. In 2012, the heats averaged 3.3 million viewers, and over an estimated four million people in Sweden watched the final, almost half of the Swedish population.