Mazamas
| A group of climbers ascending Cooper Spur, Mount Hood, July 19, 1894. | |
| Formation | July 19, 1894 | 
|---|---|
| Founder | W. G. Steel and others | 
| Founded at | Mount Hood, Oregon, US | 
| Type | Non-profit mountaineering organization | 
| 93-0408077 | |
| Legal status | 501(c)(3), NTEE Code C60 | 
| Headquarters | Portland, Oregon | 
| Region  | Oregon, Cascade Range | 
| Products | Mazamas Bulletin | 
| Website | mazamas | 
The Mazamas (/məˈzɑːməz/) is a mountaineering organization based in Portland, Oregon, United States, founded in 1894.