- Who
- Mansour Naderi
- What
- 1.44 metre(s)
- Where
- Iran (Shar-e Rey)
- When
The tallest stack of hats worn while unicycling is 1.44 m (4.72 ft) and was achieved by Mansour Naderi (Iran) in Shar-e Rey, Iran, on 1 October 2023.
Mansour surpassed his previous height to achieve this Guinness World Records title.