Jan Potměšil (31 March 1966 – 16 April 2026) was a Czech actor.
In the summer of 1989, Potměšil finished his lectures at the Theatre Faculty of the Academy of Performing Arts in Prague and joined Divadlo na Vinohradech. Later that year, he hooked up with other students and actors who were going to Ostrava to persuade the miners to support the Velvet Revolution. On the way back, he was injured in car accident, suffering a severe spinal injury. He was in the backseat at the time of the crash. It has been suspected that the accident was caused by the driver falling into a microsleep, a theory Potměšil supported. Another actor, Jan Kačer was also in the car at the time of the crash, sitting in the passenger seat.
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