- Isaac Johnson
- 9.34 centimeters centimetre(s)
- United States (Minneapolis/Bloomington)
The largest gape belongs to Isaac Johnson (USA) and measures 9.34 cm (3.67 in), as verified in Bloomington, Minnesota, USA, on 15 April 2019.
Isaac was 14 years old when the record was verified, and can fit objects like a baseball and the bottom of a 20 oz soda bottle into his gape.