Most Reigns
- Dominik Mysterio (1)
- El Hijo del Vikingo (1)
AAA Mega Championship
Years Active 2007 — Present
Promotion AAA
Brand N/A
Total Reigns 2
Total Champions 2
Longest Reign Dominik Mysterio (305 days)
Current Champion 
Dominik Mysterio
305 days as the AAA Mega Champion
Won title by defeating El Hijo del Vikingo at Worlds Collide: Las Vegas on September 12, 2025. Currently holds the longest reign in this title's history.
Longest Reigns
- Dominik Mysterio (305 days)
- El Hijo del Vikingo (104 days)
AAA Mega Championship Complete Reign History
= Reign Distinction = Includes Reign Notes
| # Click to sort | Wrestler Click to sort | Date Won Click to sort | Opponent(s) Click to sort | Event Click to sort | Match Type Click to sort | Days Held Click to sort |
|---|---|---|---|---|---|---|
| 2 | Dominik Mysterio | Sep 12, 2025 | El Hijo del Vikingo | Worlds Collide: Las Vegas | 305* | |
| 1 | El Hijo del Vikingo | May 31, 2025 | Alberto El Patrón | Alianzas | 104 |
AAA Mega Championship Historical Reign Leaders
| # | Champion | Reigns | Total Days Held | Longest Reign (Days) | Avg. Reign (Days) | % of Career Title Held |
|---|---|---|---|---|---|---|
| 1 | Dominik Mysterio | 1 | 305 | 305 | 305 | 12.8% |
| 1 |  El Hijo del Vikingo | 1 | 104 | 104 | 104 | 2.3% |
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