Vegaphobia (or vegephobia) is the aversion to and discrimination against vegetarian and vegan people.

Some of the oldest episodes of aversion can be found in the 3rd and 4th centuries when Greek comedies are written where Pythagoras is despised of his choice of not eating meat.

They then have episodes of persecution of vegetarians in China in the twelfth century as well as in the European medieval, where they were branded as heretics and persecuted by the Holy Inquisition. These persecutions are also detailed in the essay Pythagora's Supper by Erica Joy Mannucci.

In recent times, Nazi Germany became the protagonist of the vegetarian persecution. When he came to power in 1933, Hitler infiltrated all vegetarian associations in Germany, detained executives, and closed the main vegetarian magazines published in Frankfurt. Nazi persecution forced vegetarians to leave the country or enter into secret. A German vegetarian, Edgar Kupfer-Koberwitz, fled to Paris and then to Italy where he was arrested by the Gestapo and sent to the Dachau concentration camp. During the war, Nazi Germany banned all vegetarians in the territories occupied by it, though vegetarian diets could have contributed to alleviating the famine of the war time.