Q: Context: The 4G services were launched internally to Jio's partners, its staff and their families on 27 December 2015. Bollywood actor Shah Rukh Khan, who is also the brand ambassador of Jio, kickstarted the launch event which took place in Reliance Corporate Park in Navi Mumbai, along with celebrities like musician AR Rahman, actors Ranbir Kapoor and Javed Jaffrey, and filmmaker Rajkumar Hirani. The closed event was witnessed by more than 35000 RIL employees some of whom were virtually connected from around 1000 locations including Dallas in the US.

Question: who is the brand ambassador of reliance jio? Let's give stream of consciousness first:
To answer the question, consider the following: Bollywood actor Shah Rukh Khan, who is also the brand ambassador of Jio, kickstarted the launch event which took place in Reliance Corporate Park in Navi Mumbai, along with celebrities like musician AR Rahman, actors Ranbir Kapoor and Javed Jaffrey, and filmmaker Rajkumar Hirani. Therefore, the final answer is Bollywood actor Shah Rukh Khan.