半身人（Halfling）为角色扮演游戏《龙与地下城》中虚构的一种生物。其体型只有一般人类的二分之一。原型来自托尔金作品中的虚构生物：哈比人。但由于哈比人为托尔金特有的商标，故龙与地下城（Dungeons & Dragons）及其他奇幻作品将哈比人及类哈比人的种族称为半身人。

Halfling is another name for J. R. R. Tolkien's Hobbit, a fictional race found in some fantasy novels and games. They are often depicted as similar to humans except about half as tall. Dungeons & Dragons began using the name halfling as an alternative to hobbit for legal reasons.