Offbeat Theme Days & Fun Holidays for May to Celebrate in Your Workplace
Here’s a partial list of some of the fun, wacky, offbeat and not-so-wacky holidays and theme days for the month of May, 2026. Celebrating these, recognizing these theme days is a very simple way to bring a little fun and humor into your workplace. For some ideas on how to make use of some of these fun holidays go to: Ways to Celebrate Fun Holidays in the Workplace
May 1
Batman Day
Executive Coaching Day
Global Love Day
Hug Your Cat Day
International Guerilla Sunflower Gardening Day
International Workers Day
International Doodle Dog Day
Lei Day
Loyalty Day
May Day
Mother Goose Day
Bubba Day
Heatstroke Prevention Day
Purebred Dog Day
School Principals’ Day
Skyscraper Day
Space Day
Tuba Day
International Sauvignon Blanc Day
May 2
World Naked Gardening Day
International Harry Potter Day
Life Insurance Day
Roberts Rules of Order Day
World Tuna Day
Herb Day
Learn to Ride a Bike Day
Mariachi Day
Play Outside Day
Home Brew Day
Scrap Booking Day
Fitness Day
May 3
World Laughter Day
Garden Meditation Day
Lumpy Rug Day
Paranormal Day
Two Different Colored Shoes Day
Public Radio Day
Wild Koala Day
World Press Freedom Day
Sun Day
International Firefighters Day
Lemonade Day
May 4
International Respect for Chickens Day
Intergalactic Star Wars Day – May the Fourth Be With You!
World Give Day
Petite and Proud Day
Day of Reason
Great Lakes Awareness Day
May 5
Cinco de Mayo Day
Poem On Your Pillow Day
Cartoonists Day
Revenge of the Fifth (For the Star Wars nerds out there)
International Roller Derby Day
World Portuguese Language Day
May 6
No Homework Day
No Diet Day
International Management Accounting Day
International Nurses Day
May 7
World Password Day
Beaufort Scale Wind Day
Cosmopolitan Day
May 8
No Socks Day
Fintastic Friday – Giving Sharks a Voice Day
Free Trade Day
World Red Cross Day
May 9
O. Henry Pun Off Day
Stay Up All Night Day
World Belly Dancing Day
World Migratory Bird Day
World Fair Trade Day
World Scotch Pie Day
Archery Day
Sleepover Day
Mother Ocean Day
Moscato Day
Europe Day
May 10
Mother’s Day
Clean Your Room Day
Hamster Day
Hostess Cupcake Day
Mother Ocean Day
May 11
Eat What You Want Day
Foam Rolling Day
May 12
International Nurses Day
Root Canal Awareness Day
Limerick Day
Nutty Fudge Day
Odometer Day
May 13
Frog Jumping Day
Crouton Day
Hummus Day
World Cocktail Day
Night Shift Workers Day
Receptionists Day
Root Canal Appreciation Day
May 14
Dance Like a Chicken Day
Decency Day
May 15
Flight Attendant Day
Pizza Party Day
International Virtual Assistants Day
International Day of Families
International Kangaroo Care Awareness Day
Chocolate Chip Cookie Day
Sliders Day
Nylon Stockings Day
Straw Hat Day
World Eel Day
International Day of Light
Morel Mushroom Day
Endangered Species Day
May 16
Mimosa Day
BBQ Day
Sea Monkey Day
Biographers Day
World Fiddle Day
International Learn to Swim Day
May 17
Ride a Unicycle Day
Walnut Day
Pinot Grigio Day
World Telecommunication Day
Same Sex Marriage Day
May 18
Victoria Day
Send an Electronic Greeting Card Day
International Museum Day
Visit Your Relatives Day
I Love Reese’s Day
Buy a Musical Instrument Day
Supply Chain Professional Day
May 19
Accounting Day
Scooter Day
May 20
Blue Jean Day
Turn Beauty Inside Out Day
International Human Resources Day
Weights and Measures Day
Eliza Doolittle Day
Rescue Dog Day
World Bee Day
World Meteorology Day
International Red Sneakers Day
May 21
Waitress/Waiter Day
World Chardonnay Day
Eat More Fruits and Vegetables Day
International Tea Day
Memo Day
I Need a Patch for That Day
End of the World/Rapture Party Day
May 22
International Day of Biological Diversity
Don’t Fry Day
Title Track Day
Polka Day
International Being You Day
Craft Distillery Day
Canadian Immigrants Day
Sherlock Holmes Day
World Goth Day
May 23
World Turtle Day
Taffy Day
May 24
Brother’s Day
International Tiara Day
Neighbor Day
Scavenger and Treasure Hunt Day
Morse Code Day
Aviation Maintenance Technicians Day
May 25
Nerd/Geek Pride Day
Cookie Monster’s Birthday
Tap Dance Day
Towel Day
Hamburger Day
Wine Day
International Plastic Free Day
World Fish Migration Day
May 26
World Lindy Hop Day
Paper Airplane Day
May 27
World Otter Day
Senior Health and Fitness Day
Cellophane Tape Day
May 28
Brisket Day
May 29
Learn About Composting Day
Heat Awareness Day
Alligator Day
Put a Pillow on Your Fridge Day
International United Nations Peacekeepers Day
May 30
Creativity Day
International Day of the Potato
May 31
Smile Day
What You Think About Grows Day
Save Your Hearing Day
World No Tobacco Day
World Parrot Day
Michael Kerr is a Hall of Fame business speaker who speaks on workplace culture, culture leadership and humor in the workplace. His books include, Small Moments Big Outcomes: How Leaders Create Cultures That Fuel Extraordinary Results, The Humor Advantage: Why Some Businesses Are Laughing All the Way to the Bank and The Jerk-Free Workplace.
