How many Championship belts has the UnderTaker won?

World Wrestling Entertainment:

4 time wwe champion

3 time world heavyweight champion

1 time hardcore champion

7 time world tag team champion

1 time wcw tag team champion

United States Wrestling Association:

1 time USWA unified world heavyweight champion

World Class Wrestling Association:

1 time WCWA heavyweight champion

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18 title reigns in pro career (might of been more)

16 title reigns in the WWE