Nelson Dellis
| Personal information | |
|---|---|
| Full name | Nelson Charles Dellis | 
| Nationality | American, British | 
| Born | February 4, 1984 Wimbledon, UK | 
| Alma mater | University of Miami (B.S. in Physics, M.S. in Computer Science) | 
| Occupation(s) | Mnemonist, Mountaineer, Public Speaker, Consultant | 
| Years active | 2009-present | 
| Website | www | 
| Sport | |
| Sport | Memory | 
| Rank | No. 81 (Jul. 2020), Grand Master of Memory | 
| Achievements and titles | |
| World finals | 7th place (2012), 12th place (2013), 8th place (2014), 23rd place (2015) | 
| National finals | W (2011, 2012, 2014, 2015, 2021, 2024), F (2010, 2013, 2018, 2019, 2020) | 
| Highest world ranking | No. 21 (Oct. 2011) | 
| Personal bests | 
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Nelson Charles Dellis (born February 4, 1984) is an American memory athlete and consultant. He is a six-time USA Memory Champion, holding the record for most wins of the national memory champion title. He is also one of the co-founders of Memory League (formerly, Extreme Memory Tournament). Nelson also runs Climb 4 Memory - a nonprofit which "aims to raise funds and awareness for Alzheimer's disease research through mountain climbs around the world."