短裤古称裈，是遮盖下体至大腿的衣服，分为男女装两装。短裤长短不一，部份长至小腿。短裤可以穿在外面；若穿在里面则一般称为内裤。

穿着短裤的原因有很多，包括：

• 简单：感觉舒适，容易穿着。
• 实用：清凉、轻便、容许身体作出大幅度的动作。
• 喜好：因清凉、轻便且舒适，易穿着而受到喜好。
• 制服：校方规定。
• 性感：露出大部份的腿部，展露身体线条。

Shorts are a garment worn by both men and women over their pelvic area, circling the waist and splitting to cover the upper part of the legs, sometimes extending down to the knees but not covering the entire length of the leg. They are called "shorts" because they are a shortened version of trousers, which cover the entire leg. Shorts are typically worn in warm weather or in an environment where comfort and air flow are more important than the protection of the legs.