Kai Wiesinger (born April 16, 1966, in Hanover) is a German actor, director, screenwriter, and voice actor for dubbing and audio dramas. He rose to fame in 1992 with the comedy film *Kleine Haie*.

Wiesinger made his television debut in the late 1980s on the ZDF program *Aktenzeichen XY … ungelöst*. He achieved his breakthrough in 1992 with the lead role in *Kleine Haie*, for which he—alongside Jürgen Vogel and Gedeon Burkhard—received the Bavarian Film Award.