Agility is important for combat sports such as boxing, court sports such as tennis and team sports such as volleyball or baseball. However, this review will be limited to a category of sports described as “invasion” or “territorial” sports, which have common characteristics. These sports involve opposing teams attempting to invade their opponent’s territory to enhance scoring opportunities. Gaining and maintaining possession of the ball is crucial for attack, and defending is important to prevent the opposition from scoring. Invasionsports include all football codes, basketball, netball, European handball, lacrosse, and field hockey. Although sports played in an aquatic environment such as water polo or sports played on ice such as ice-hockey are also examples of invasion sports, only agility relating to land-based sports involving locomotion by walking or running will be discussed in this review. In invasion sports, agility skill is beneficial to attackers to evade their opponent’spressure or tackles, and for defenders to reduce space on the field or court to limit attacking movements, or potentially achieve a turnover.