Most Successful World Heavyweight Boxing Title Defenses All Time

About This Dataset

Heavyweight boxing champions ranked by the number of successful world title defenses throughout their career. Joe Louis's record of 25 successful heavyweight title defenses between 1937 and 1949 stands as one of the most enduring records in all of professional sport — spanning a 12-year reign that survived the Second World War and an era when the heavyweight championship was widely considered the most prestigious title in athletics.

Analysis

Joe Louis heads the table on 25, ahead of Larry Holmes (20) and Muhammad Ali (19) in Heavyweight Title Defenses. 17 separates the highest figure (25) from the lowest (8). First and second are separated by 5, so the leader sits inside the field rather than apart from it. Places 3 to 8 are close together, spanning 19 to 8.

Source: Wikipedia

Key Findings

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Joe Louis leads in Heavyweight Title Defenses with 25.

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Average Heavyweight Title Defenses: 15 · median: 15.

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Gap: Joe Louis is 3.1× larger than Evander Holyfield.

Most Successful World Heavyweight Boxing Title Defenses All Time

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Data Insights Below

Data Insights

Numbers, trends & sources behind this chart

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Data Points

8 categories · 1 year

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Top Value

Joe Louis

Heavyweight Title Defenses · All Time

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Metrics

Heavyweight Title Defenses

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Period

All Time

Single year snapshot

Methodology & source

Data source: Wikipedia
Coverage: 8 entities · 8 observations
Measure: Heavyweight Title Defenses
Last updated: 6 September 2026
Compiled by: The ANYSTAT team, from the source above

How the figures are calculated

Values are shown as reported by the source. Nothing is rescaled, rebased or converted — the only changes are thousand separators and decimals shown to two places.
Entities are ranked highest-first on their value.