Yes, comprehensive records exist for the thousands who have reached Mount Everest's summit (8,848.86 m / 29,031.7 ft). No single definitive list captures everyone, but several authoritative sources maintain extensive databases:
The Himalayan Database (himalayandatabase.com) is the gold standard, curated by Elizabeth Hawley and now Richard Salisbury. It records every permitted expedition since 1903, detailing summiteers, dates, routes, oxygen use, and fatalities. It's the primary reference for historians and journalists.
The Everest Summiteers Association (ESA) maintains a membership roster of verified summiteers, primarily from Nepal and international climbers who register.
Guinness World Records tracks superlatives: youngest, oldest, most ascents, fastest ascents, first by nationality, disabled climbers, etc.
The Alpine Club (UK) and Royal Geographical Society hold historical archives of British and Commonwealth expeditions, including early attempts (1920s-1950s).
EverestHistory.com (by Alan Arnette) offers searchable lists by year, nationality, and name, with expedition narratives. Wikipedia's "List of people who have climbed Mount Everest" is a crowdsourced but well-referenced compilation.
Early ascents (pre-1970s) sometimes lack full rosters. Unpermitted or unreported climbs (rare but possible) go unrecorded. Verification standards vary. Researchers typically cross-reference multiple sources.
As of 2024, over 6,000 individuals have made more than 11,000 summits (many climbers summit multiple times).