National Mascot Day2026 · Date · History
Major League Baseball documents National Mascot Day on June 17 in connection with Mascot Hall of Fame recognition; original creator and first edition remain unresolved.
About National Mascot Day
National Mascot Day is observed on June 17 in the U.S. sports-mascot community.
Major League Baseball documented the Mascot Hall of Fame announcing its 2025 class on National Mascot Day.
Why National Mascot Day matters
The day celebrates mascots and the performers, programs and communities built around them.
It is a community/cultural observance rather than a statutory public holiday.
History of National Mascot Day
June 17 is established in current sports-community usage as National Mascot Day.
The Mascot Hall of Fame used the observance for a major 2025 class announcement, reported by Major League Baseball.
The available authoritative evidence used for this guide does not establish the original creator, first edition or why June 17 was selected.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
9 fields not established in reviewed sources
How to Observe National Mascot Day
Thank a mascot performer or program for community work.
Learn about the history of a favorite team or school mascot.
Explore how mascots support fan engagement and community events.
Create an original mascot concept for a club, classroom or fictional team.
National Mascot Day Facts
National Mascot Day is observed on June 17 in established U.S. sports-community usage.
The Mascot Hall of Fame announced its 2025 class on the day.
The observance is not a statutory public holiday.
Its original founder and first edition remain unresolved here.
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
MLB — Fredbird inducted on National Mascot Day (opens in a new tab)
Major Sport League
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is National Mascot Day?
17 June in established sports-community usage The documented recurrence rule is: 17 June in established sports-community usage.
Does National Mascot Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is National Mascot Day an official public holiday?
The reviewed sources verify it within this scope: Sports mascot recognition / Mascot Hall of Fame community. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes National Mascot Day?
The documented basis is: Major League Baseball documents National Mascot Day on June 17 in connection with Mascot Hall of Fame recognition; original creator and first edition remain unresolved.. Supporting evidence includes MLB — Fredbird inducted on National Mascot Day. The site does not infer a separate creator or founder unless reviewed evidence establishes one.
Is National Mascot Day international or country-specific?
No single country is assigned to this observance. Its documented scope is: Sports mascot recognition / Mascot Hall of Fame community. Use that scope rather than assuming worldwide or country-specific status.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-09-18.
When is National Mascot Day?
Established U.S. sports-community usage places it on June 17.
Who created National Mascot Day?
The original creator is not established by the authoritative evidence used for this guide.
What is the Mascot Hall of Fame connection?
The Mascot Hall of Fame has used National Mascot Day for major recognition activity, including its 2025 class announcement.
Is National Mascot Day a federal public holiday?
No. It is a community and sports-culture observance.
Other observances on June 17
These observances are also listed on June 17, 2027.
Bunker Hill Day
Massachusetts law gives June 17 Bunker Hill Day legal-holiday status with respect to Suffolk County only while requiring public offices there to remain open; NPS ties the date to the June 1…
National Day of Iceland
Icelandic government/parliamentary material identifies June 17 as National Day and the date on which the Republic was established in 1944; public-institution holiday information treats June…
World Day to Combat Desertification and Drought
A/RES/49/115
World Tessellation Day
Created by author and educator Emily Grosvenor in 2016; corroborated by mathematics/science organizations