卫斯理，是香港著名作家倪匡所编写科幻小说《卫斯理系列》之主角，小说以第一人称叙述。《原振侠系列》称卫斯理为「那位先生」。

据倪匡自己所说，他是乘车经过香港湾仔区大坑大坑道时，望见了卫斯理村的门牌，因此得到主角名称的灵感。

The Wisely Series are a series of Chinese adventure-science fiction novels written by the Hong Kong novelist Ni Kuang. The protagonist of the series is Wisely (sometimes also spelt "Wesley"). In total, there are 161 stories about Wisely recorded in 156 novels. Of these, only 150 stories in 145 novels are written by Ni Kuang; the remaining ones are written by other writers with Ni Kuang's permission. Some of these stories have been adapted into media, such as the films The Legend of Wisely (1987), The Cat (1992) and The Wesley's Mysterious File (2002), and the television series The New Adventures of Wisely (1998) and The 'W' Files (2004).