Sports fans are individuals who are interested in and follow one or more sports, teams, and/or athletes. These fans reinforce their identity as a fan by engaging in supportive and repetitive consumption behaviors that relate to the sport or team they are so passionate about. This chapter will provide an overview of the history and cultural heritage of sports fandom, discuss the significance and functions of fandom, underline what motivates individuals to consume sports, examine the consequences and results of fandom, and highlight contemporary research and developmental trends. This chapter would allow for a good understanding of where research on sports fandom is headed and the important issues affecting sports fans.