- Joshua Lockard
- 10,599 hertz hertz(es)
- United States (Southlake)
The highest note whistled is 10,599 Hz, and was achieved by Joshua Lockard (USA) in Southlake, Texas, USA, on 1 May 2019.
Joshua wanted to prove that he was the best in the world at whistling a high note, and achieve the Guinness World Record title on 1 May 2019.