| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Ian Clough | 2 | Ian was killed when a serac collapsed just below camp 2 on Annapurna.
References[1] Obituary by Chris Bonington Mountain 11 (1970), page 10 |
| Ian Dory | 2 | |
| Ian Dunn | 2 | |
| Iban Larrión | 2 | |
| Ilias Hosain | 2 | |
| Iris Bielli | 2 | |
| Isaac Leff | 2 | |
| Itai Axelrad | 2 | |
| Iva Vejmolová | 2 | |
| Jabee Kim | 2 | |
| Jack Ibbertson | 2 | |
| Jack Longland | 2 | References[1] https://www.climber.co.uk/outdoor/jack-longland-the-accidental-hero/ |
| Jake Kim | 2 | |
| James Garden | 2 | |
| Jancis Allison | 2 | |
| Jarle Kalland | 2 | |
| Jason Pickles | 2 | Britain’s Manliest Man References[1] https://www.ukclimbing.com/news/2008/02/page_3_gal_crowns_climber_-_britains_manliest_man-42485 |
| Jennifer Hunt | 2 | |
| Jeramie Claussen | 2 | |
| Jeremy Holmes | 2 |