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Gene Jantzen is a Men's Open Bodybuilding competitor from the United States.

Gene Jantzen profile photo

Gene Jantzen

GenderMale
StatusRetired
Medium confidence 9 recorded results, Historical/community source Updated July 10, 2026 Accurate?

Gene Jantzen is a Men's Open Bodybuilding competitor from the United States with a competitive record spanning 1938–1947.

Across 9 recorded contest results, Gene Jantzen has no recorded first-place finishes.

Win rate here is first-place finishes as a share of all 9 recorded contest results. It is published only where a career holds at least five, because below that a single placing moves the figure by twenty points or more.

Missing from this profile

No height, weight or birthdate on record.

Career Record

Total Results
9
Win Rate
0%
Career
1938–1947
Country
United States
Verified
Sources
2

Every season on record

1938 to 1947 shown · 9 results on record
1938
1939
1940
1941
1944
1945
1946
1947
Olympia 1st place 2nd place 3rd place Other
Pro Debut
1938
Last Contest
1947

All results

Every contest result on record for Gene Jantzen, 9 in all. Won by names the winner of the division Gene Jantzen competed in, and shows a dash where that winner cannot be pinned to one person in the database.

YearContestDivisionPlaceWon by
1947 Junior Mr America Men's Open Bodybuilding #2 Edward J Simons
1947 Mr America Men's Open Bodybuilding #17 Steve Reeves
1946 Mr America Men's Open Bodybuilding #10 Alan Stephan
1945 Mr America Men's Open Bodybuilding Unplaced Clarence Ross
1944 Mr America Men's Open Bodybuilding #3 Steve Stanko
1941 Mr California Men's Open Bodybuilding #2 Harold Zinkin
1940 Mr America Men's Open Bodybuilding Unplaced John Grimek
1939 America's Finest Physique Other Divisions #4 Bert Goodrich
1938 Mr America Men's Open Bodybuilding Unplaced Bert Goodrich

Where these results come from. Each contest in the table was recorded from a named source, and for Gene Jantzen that source is MuscleMemory. Open any contest above and that page names its own source and links to it where the source is still reachable. That archive no longer answers at the addresses we hold, so it is credited by name here and not offered as a link.

Only 2 head-to-head meetings on record so far, with Kimon Voyages ahead 2 to 0 - too thin to call a rivalry yet.

Opponents are ranked by how often they shared a stage and how big the stage was, not by reputation. A meeting is one contest where both competed in the same division and both were placed.