雷宇扬（Simon Lui Yue Yeung，1964年7月8日－），香港电视节目主持、专栏作家及演员，前无线电视艺员及电台节目主持。雷宇扬拥有八分之一英国血统.。

雷宇扬于1988年无线电视艺员训练班毕业，加入无线电视后，一直半红不黑，间中参与综艺节目主持同参演电视剧，但多数都是一些不起眼的小角色，其后雷宇扬离开无线电视转投电影圈，但转投电影圈后成绩都未见突出，其后更转战幕后，担任导演同监制。其最为人熟悉是曾主演一系列与灵异有关的节目，近年转往商界发展，在中国内地开餐馆。其妻子是内地主播马荔，两人育有一子。

Simon Lui Yu-Yeung (Chinese: 雷宇扬; born 8 July 1964), also known as Simon Loui, is a highly prolific Hong Kong-based actor famous for starring in many low-budget and/or horror films since the early 1990s. He began drawing attention when he was featured in the "Troublesome Night" movie series. He starred in 30+ films in 1999 alone, and began writing scripts the same year, starting with Last Ghost Standing.