National Mustard Day is celebrated every year on the first Saturday in August to recognize one of the world’s oldest condiments. The day highlights mustard’s long history, from its use in ancient civilizations to its wide presence in kitchens today.

Mustard is made from ground seeds and used in many forms, such as yellow, brown, Dijon, and whole grain. It’s added to sandwiches, salad dressings, marinades, and traditional dishes across cultures.

The day was started in 1991 by Barry Levenson, founder of the National Mustard Museum in Wisconsin, to share his interest in mustard and its many uses. While a public celebration takes place at the museum, National Mustard Day can be marked anywhere—by trying a new mustard variety, cooking with it, or simply learning more about its role in food history.


Fun fact: Did you know they even created special mustard-flavored Skittles for National Mustard Day 2023?

When is National Mustard Day?

Want to know when National Mustard Day is celebrated this year? Here is a table for National Mustard Day dates up to the year 2030:

YearDate (Including Weekday)
2025Saturday, August 2
2026Saturday, August 1
2027Saturday, August 7
2028Saturday, August 5
2029Saturday, August 4
2030Saturday, August 3
Dates for National Mustard Day from 2024 to 2030.

Fun Mustard Facts

  • Mustard is one of the oldest condiments known to humanity, with evidence of its use dating back over 5,000 years. Ancient Egyptians and Romans were among the first to use mustard seeds in their culinary practices.
  • There are more than 5,000 different types of mustard worldwide. These varieties differ in taste, color, and texture, ranging from the mild yellow mustard commonly used in the United States to the robust and spicy Dijon mustard from France.
  • Mustard seeds are not just flavorful but also packed with health benefits. They contain compounds with anti-inflammatory properties and are rich in nutrients like selenium, omega-3 fatty acids, and magnesium. These nutrients contribute to various health benefits, such as reducing inflammation, lowering blood pressure, and improving bone health​.
  • Mustard is incredibly versatile in cooking. It can be used as a condiment on sandwiches, hot dogs, and burgers or as an ingredient in salad dressings, marinades, and sauces.
  • The National Mustard Museum in Middleton, Wisconsin, boasts an impressive collection of over 6,000 mustard jars, bottles, and tubes from all 50 states and over 70 countries. Founded by Barry Levenson, a former Assistant Attorney General of Wisconsin, the museum celebrates the rich history and diversity of mustard.

Before You Go:

We have many more national days lists for you to explore.


📝 This article was originally published on July 18th, 2024. It has been thoroughly updated, and the publishing date has been changed to reflect the new version.

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National Days,

Last Update: July 23, 2025