August 1st
- Can It Forward Day
- Girlfriend’s Day
- Homemade Pie Day
- IPA Day ~ First Thursday of August
- Lammas Day
- Lughnasadh
- Lung Cancer Day
- Mahjong Day
- Minority Donor Awareness Day
- Mountain Climbing Day
- Play Ball Day
- Raspberry Cream Pie Day
- Respect for Parents Day
- Rounds Resounding Day
- Scout Scarf Day
- Spider-Man Day
- Start-Up Day across America
- US Air Force Day
- Woman Astronomers Day
- World Wide Web Day
- Yorkshire Day
August 2nd
- Beer Day ~ First Friday of August
- Braham Pie Day ~ First Friday of August
- CAD Day
- Coloring Book Day
- Dinosaurs Day
- Ice Cream Sandwich Day
- Pie Day
- Take a Penny / Leave a Penny Day
- Twins Day ~ First full Weekend of August
- Water Balloon Day
August 3rd
- Airplane Crop Duster Day
- Campfire Day ~ First Saturday of August
- Clean Your Floors Day
- Clown Day ~ The Saturday of Clown Week
- Disc Golf Day
- Esther Day
- Friendship Day (International Holiday)
- Grab Some Nuts Day
- Hangover Day ~ First Saturday of August
- Jamaican Patty Day ~ First Saturday of August
- Mead Day ~ First Saturday of August
- Mustard Day ~ First Saturday of August
- Sandcastle Day
- Taxpayer Appreciation Day ~ First Saturday of August
- Watermelon Day
August 4th
- American Family Day ~ First Saturday of August
- Chocolate Chip Cookie Day
- Doll Day ~ First Sunday of August
- Forgiveness Day ~ First Saturday of August
- Friendship Day (Not the International Holiday )~ First Saturday of August
- Hooray for Kids Day
- Kids Day ~ First Saturday of August
- Psychic Day ~ First Sunday of August
- Raisin Bran Day
- Single Working Women’s Day
- Sisters’ Day ~ First Sunday of August
- Social Security Day
- US Coast Guard Day
- White Wine Day ~ First Sunday of August
August 5th
- Assistance Dog Day ~ First Monday of a full week in August
- Doll Day
- Green Peppers Day
- Oyster Day
- Traffic Light Day
- Underwear Day
- Work like a Dog Day
August 6th
- Balloons to Heaven Day
- Corporate Baby Name Day
- Farmworker Appreciation Day
- Fresh Breath Day
- Gossip Day
- Hiroshima Day
- National Night Out ~ First Tuesday of August
- Root Beer Float Day
- Wiggle Your Toes Day
August 7th
- Albarino Day
- Beach Party Day
- Lighthouse Day
- Particularly Preposterous Packaging Day
- Professional Speakers Day
- Psychiatric Technician Appreciation Day ~ First Wednesday of a full week in August
- Purple Heart Day
- Raspberries ‘n Cream Day
- Sea Serpent Day
August 8th
- Cat Day
- CBD Day
- Dalek Day
- Date to Create
- Dollar Day
- Frozen Custard Day
- Happiness Happens Day
- Odie Day
- Scottish Wildcat Day
- Sneak Some Zucchini onto Your Neighbor’s Porch Day
- Wear Your Mother’s Jewelry Day
August 9th
- Book Lover’s Day
- Hand Holding Day
- International Day of the World’s Indigenous People
- Kool-Aid Day ~ Second Friday of August
- Polka Day
- Rice Pudding Day
- Veep Day
August 10th
- Bowling Day ~ Second Saturday of August
- Duran Duran Appreciation Day
- Garage Sale Day
- Lazy Day
- Lion Day
- Model Aviation Day ~ Second Saturday of August
- Paul Bunyan Day
- S’mores Day
- Shapewear Day
- Skyscraper Appreciation Day
- Smithsonian Day
- Spoil Your Day Day
August 11th
- Annual Medical Checkup Day
- Gay Uncles Day ~ Second Sunday of August
- Hip Hop Day
- Ingersoll Day
- Presidential Joke Day
- Raspberry Bombe Day
- Raspberry Tart Day
- Son and Daughter Day
- Spirit of ’45 Day~ Second Sunday of August
August 12th
- Baseball Fans Day
- Elephant Day
- IBM PC Day
- Julienne Fries Day
- Middle Child’s Day
- MIlkman Day
- Sewing Machine Day
- Truck Driver Day
- Victory Day~ Second Monday of August
- Vinyl Record Day
- Youth Day
August 13th
- Filet Mignon Day
- Left-Handers Day
- Prosecco Day
August 14th
- Creamsicle Day
- Financial Awareness Day
- Navajo Code Talkers Day
- VJ Day
- Wiffle Ball Day
August 15th
- Best Friends Day
- Chauvin Day
- Check the Chip Day
- Failures Day
- Feast of the Assumption
- I Love Cowboys and Cowgirls Day
- Leathercraft Day
- Lemon Meringue Pie Day
- Nicholas Chauvin Day
- No Spongebob Day
- Relaxation Day
August 16th
- Airborne Day
- Bratwurst Day
- Brother’s Day
- Joe MIller’s Joke Day
- Men’s Grooming Day ~ Third Friday of August
- Rollercoaster Day
- Rum Day
- Surveillance Day
- Tell a Joke Day
- True Love Forever Day
August 17th
- #2 Pencil Day
- Baby Boomers Recognition Day
- Balloon Airmail Day
- Black Cat Appreciation Day
- Chef Appreciation Day ~Third Saturday of August
- Clear the Shelters Day ~Third Saturday of August
- Geocaching Day ~Third Saturday of August
- Homeless Animals Day ~Third Saturday of August
- Honey Bee Awareness Day ~Third Saturday of August
- I Love My Feet Day
- Meaning of “Is” Day
- Nonprofit Day
- Thrift Shop Day
- Vanilla Custard Day
August 18th
- Bad Poetry Day
- Badge Ribbon Day
- Birth Control Pills Day
- Daffodil Day
- Fajita Day
- God’s Preeminence Day ~Third Sunday of August
- Helium Discovery Day
- Ice Cream Pie Day
- Mail Order Catalog Day
- Serendipity Day
August 19th
- Aviation Day
- Black Cow Root Beer Float Day
- Bow Day
- Coco Chanel Day
- Cupcake Day ~ Third Monday of August
- Hot and Spicy Food Day
- Humanitarian Day
- Orangutan Day
- Photo Day
- Potato Day
- Sandcastle and Sculpture Day
- Soft Ice Cream Day
- Stay Home with Your Kids Day ~ Third Monday of August
August 20th
- Bacon Lover’s Day
- Chocolate Pecan Pie Day
- Lemonade Day
- Mosquito Day
- Radio Day
- Virtual Worlds Day
August 21st
- Brazilian Blowout Day
- Day of Remebrance and Tribute to the Victims of Terrorism (International)
- Internet Self Care Day
- Medical Dosimetrist Day ~Third Wednesday of August
- Poet’s Day
- Senior Citizen’s Day
- Spumoni Day
August 22nd
- Bao Day
- Be an Angel Day
- Black Women’s Equal Pay Day
- Eat a Peach Day
- Never Bean Better Day
- Pecan Torte Day
- Southern Hemisphere Hoodie Hoo Day
- Surgical Oncologist Day
- Take Your Cat to the Vet Day
- Tooth Fairy Day
August 23rd
- Buttered Corn Day
- Day of Remembrance for the Slave Trade and Its’ Abolition
- Hug Your Sweetheart Day
- Ride the Wind Day
- Valentino Day
August 24th
- Bat Night (International) ~ Last full weekend of AUgust
- Can Opener Day
- Knife Day
- Peach Pie Day
- Pluto Demoted Day
- Shooting Star Day
- Strange Music Day
- Vesuvius Day
- Waffle Day
- Waffle Iron Day
- Wayzgoose Day
- Weather Complaint Day
- WIlliam Wilburforce Day
August 25th
- Banana Split Day
- Go Topless Day ~ The Sunday nearest August 26 (Women’s Equality Day)
- Kiss and Make Up Day
- Park Service Day
- Park Service Founders Day
- Sacrifice Our Wants for Other’s Needs Day ~ Last Sunday of August
- Second-Hand Wardrobe Day
- Whiskey Sour Day
August 26th
- Cherry Popsicle Day
- Dog Day
- Make Your Own Luck Day
- Motorist Consideration Day ~ Last Monday of August
- Musical Yoga Day
- Toilet Paper Day
- Webmistress Day
- Women’s Equality Day
August 27th
- Banana Lovers Day
- Forgiveness Day
- Just Because Day
- Kiss Me Day
- Petroleum Day
- Pots de Creme Day
- Tarzan Day
- “The Dutchess Who Wasn’t” Day
- Touch a Heart Tuesday ~ Last Tuesday of August
August 28th
- Bow Tie Day
- Cherry Turnover Day
- Crackers over the Keyboard Day
- Dream Day Quest and Jubilee
- Power Rangers Day
- Race Your Mouse Around the Icons Day
- Radio Commercial Day
- Rainbow Bridge Remembrance Day
- Read Comics in Public Day
- Red Wine Day
- Tug-of-War Day ~ Last Wednesday of August
- Willing to Lend a Hand Wednesday ~ Last Wednesday of August
August 29th
- According to Hoyle Day
- Chop Suey Day
- International Day Against Nuclear Tests
- International Rights Day
- Lemon Juice Day
- More Herbs, Less Salt Day
- Thoughtful Thursday ~ Last Thursday of August
- Sarcoidosis Awareness Day
- Swiss Winegrowers Day
August 30th
- Beach Day
- Cabernet Sauvignon Day (International)
- College Colors Day ~ First Friday before labor day
- Day of the Disappeared
- Forgive your Foe Day ~ Last Friday of August
- Frankenstein Day
- Grief Awareness Day
- Holistic Pet Day
- Slinky Day
- Toasted Marshmallow Day
- Whale Shark Day
August 31st
- Bacon Day ~ The Saturday before Labor Day
- Buffalo Chicken Wings Days ~ The weekend before Labor Day
- Cowgirl Day
- Diatomaceous Earth Day
- Eat Outside Day
- Franchise Appreciation Day
- Love Litigating Lawyers Day
- Matchmaker Day
- Overdose Awareness Day
- Pony Express Day
- Speak Kind Words Saturday ~ Last Saturday of August
- Trail Mix Day
- We Love Memoirs Day