Johan Harmenberg

Fencing career He fenced for the club Föreningen för Fäktkonstens Främjande in Sweden.

University Åkerman fenced foil for the MIT fencing team, the MIT Engineers. He won the 1974 Intercollegiate Fencing Association foil championship, and won the bronze medal in the 1974 NCAA Fencing Foil Championship with a record of 18–5. It was MIT's first weapon title at the competition in 43 years.

World Championships He won the 1977 World Championship titles in individual épée and team épée in Buenos Aires, Argentina. He also won a bronze medal in team épée at the 1979 World Championships in Hamburg, Germany. In three of the final matches he won by only one touch. He is the only Swede to have won an individual gold medal in fencing. Harmenberg was a member of the Swedish épée team as well; the team placed 5th in the team épée competition.

Biotech career Harmenberg is an Associate Professor (Docent) of Virology at Karolinska Institute.

He became a biotech executive and researcher. In September 2019, Harmenberg joined Beactica Therapeutics, a Swedish drug discovery company, as a clinical advisor. In November 2021, he was appointed chief medical officer of LIDDS AB.

Scholarship Harmenberg is the author of over 100 publications in scientific literature. Harmenberg has also had a distinguished career in medical pharmacology, publishing a variety of papers relating to viral immunology.

Harmenberg co-authored Épée 2.0: The Birth of the New Fencing Paradigm, and Épée 2.5: The New Paradigm Revised and Augmented. and Epee 2.6. In these books, he describes the new fencing paradigm that he developed with Maestro Eric Sollee, from MIT, which resulted in his victories and a transformation in how épée is fenced at the higher levels of competition.

Personal life His son Karl Harmenberg fenced épée for Harvard University, and as a junior in 2008–09 won the gold medal at the NCAA Regionals and was selected to All-Ivy League second team.