The Margarita’s story is famous, but not settled.

The most credible historical view is that the Margarita likely evolved from the Daisy family of cocktails. In fact, “margarita” is Spanish for “daisy,” and drink historians often point to the Tequila Daisy as its direct ancestor. That older template used tequila, citrus, and an orange liqueur or sweetener structure very close to the modern Margarita.

There are also several popular invention legends from Mexico and the U.S. border region, usually dating to the 1930s or 1940s, where a bartender supposedly created the drink for a woman named Margarita or Marjorie. Those stories are widely repeated, but historians treat many of them with caution because cocktail origin stories are often romanticized after the fact.

So the best answer is: the Margarita probably was not invented in one magical moment by one person.
It was more likely a gradual evolution of the Tequila Daisy into the drink we now know as the Margarita.

A classic Margarita is:

  • tequila

  • orange liqueur

  • lime juice