- Kimo Ah Yun, Gary Meyer
- 74 total number
- United States (Las Vegas)
The most casinos gambled in 24 hours is 74, and was achieved by Kimo Ah Yun and Gary Meyer (both USA) in Las Vegas, Nevada, USA, on 19-20 October 2017.
Gary and Kimo decided to attempt this record again to better their previous attempt from 2015. This time, they gambled at an additional 5 casinos within the 24 hour time frame.