| Name | Type |
|---|---|
| Joseph Nicholi Puryear, 1972-2010 (2011) | Article |
| Joseph Nisbet LeConte, 1870-1950 (1950) | Article |
| Joseph R. Leuthold, 1906-1965 (1966) | Article |
| Jules M. Eichorn, 1912-2000 (2001) | Article |
| Juneau Ice Field Research Project, 1954 (1955) | Article |
| K2 in Winter (2021) | Article |
| K2 on Skis (2019) | Article |
| K7 West (6,615m), Northwest Face, Dreamers of Golden Caves (2012) | Article |
| Kang Nachugo (2009) | Article |
| Kang Nachugo, South Face and West Ridge (2018) | Article |
| Kanjiroba Sancturary Exploration (2010) | Article |
| Karakoram Summer (2005) | Article |
| Kate Gardiner, 1886-1977 (1974) | Article |
| Katharsis (2015) | Article |
| Kenneth Atwood Henderson, 1907-2001 (2003) | Article |
| Kenneth Rose McAlpin, 1882-1964 (1964) | Article |
| Kenya's Rocks (2005) | Article |
| Khumbu Climbing School (2004) | Article |
| Kichatna Spires (1982) | Article |
| Kilimanjaro Porter Assistance Project, HEC Porter Assistance Expanded to Africa and South America (2003) | Article |