October 1
- National Black Dog Day
- National Hair Day
- Fire Pup Day
- National Homemade Cookies Day
- National Manufacturing Day – First Friday in October
- National Body Language Day – First Friday in October
- World Smile Day – First Friday in October
October 2
- National Produce Misting Day
- National Custodial Worker’s Recognition Day
- National Name Your Car Day
- National Fried Scallops Day
October 3
- National Techies Day
- National Boyfriend Day
- National GOE Day – Sunday of the First Full Weekend
October 4
- National Cinnamon Bun Day
- National Taco Day
- National Golf Lover’s Day
- National Vodka Day
- National Consignment Day – First Monday in October
- National Child Health Day – First Monday in October
October 5
- National Get Funky Day
- National Rhode Island Day
- National Do Something Nice Day
- National Apple Betty Day
- National Eat Fruit At Work Day – First Tuesday in October
October 6
- National Coaches Day
- National Orange Wine Day
- National Plus Size Appreciation Day
- National Mad Hatter Day
- National German-American Day
- National Noodle Day
- National Walk to School Day – First Wednesday in October
- National Pumpkin Seed Day – First Wednesday in October
- National Coffee with a Cop Day – First Wednesday in October
October 7
- National Chocolate Covered Pretzel Day
- National LED Light Day
- National Frappe Day
- National Inner Beauty Day
- National Trigeminal Neuralgia Awareness Day
October 8
October 9
- National Leif Erikson Day
- National Pro-Life Cupcake Day
- National Moldy Cheese Day
- National Chess Day – Second Saturday in October
- National Costume Swap Day – Second Saturday in October
- National Motorcycle Ride Day – Second Saturday in October
- I Love Yarn Day – Second Saturday in October
October 10
- National Angel Food Cake Day
- National Cake Decorating Day
- National Handbag Day
- National Metric Day
- World Mental Health Day
- Clergy Appreciation Day (or Pastor Appreciation Day or Ministry Appreciation Day) – Second Sunday in October
October 11
- International Day of the Girl Child
- National Sausage Pizza Day
- National Coming Out Day
- General Pulaski Memorial Day
- National Online Bank Day – Second Monday in October
- National Kick Butt Day– Second Monday in October
- Native American Day – Second Monday in October
- Columbus Day – Second Monday in October
October 12
- National Savings Day
- National Vermont Day
- National Freethought Day
- National Farmer’s Day
- National Gumbo Day
October 13
- National Train Your Brain Day
- National Yorkshire Pudding Day
- Navy Birthday
- National Metastatic Breast Cancer Awareness Day
- National No Bra Day
- National Curves Day – Second Wednesday in October
- National Emergency Nurse’s Day – Second Wednesday in October
- National Bring Your Teddy Bear to Work/School Day – Second Wednesday in October
- National Stop Bullying Day – Second Wednesday in October
- National Fossil Day – On Wednesday of Second Full Week in October
- National Take Your Parents To Lunch Day – Changes Annually (October 13, 2021)
October 14
October 15
- National Shawarma Day
- National Aesthetician Day
- National Cheese Curd Day
- National I Love Lucy Day
- National Grouch Day
- National Latino AIDS Awareness Day
- National Pregnancy and Infant Loss Awareness Day
- National White Cane Safety Day
- Boss’s Day (or National Boss’s Day) – Annually Oct. 16 unless it falls on a weekend. Then it’s the closest workday.
October 16
- National Sports Day
- National Liqueur Day
- National Dictionary Day
- Global Cat Day
- Department Store Day
- National Sweetest Day – Third Saturday in October
October 17
October 18
- National Exascale Day
- International Legging Day
- National Chocolate Cupcake Day
- National No Beard Day
- National Clean Your Virtual Desktop Day – Third Monday in October
October 19
- National Kentucky Day
- National Seafood Bisque Day
- National LGBT Center Awareness Day
- Pro-Life Day of Silent Solidarity – Third Tuesday in October
- National Pharmacy Technician Day – Third Tuesday in October
October 20
- National Youth Confidence Day
- National Brandied Fruit Day
- BRA Day USA – Third Wednesday in October
- Hagfish Day – Third Wednesday in October
- Support Your Local Chamber of Commerce – Third Wednesday in October
- Medical Assistants Recognition Day – On Wednesday of Third Business Week in October
October 21
- National Pumpkin Cheesecake Day
- National Reptile Awareness Day
- National Get Smart About Credit Day – Third Thursday in October
- Get to Know Your Customers Day – Third Thursday of Each Quarter (January, April, July, October)
October 22
October 23
- National Boston Cream Pie Day
- National Mole Day
- National TV Talk Show Host Day (Johnny Carson’s birthday)
- Swallows Depart from San Juan Capistrano Day
- iPod Day
- National Make A Difference Day – Fourth Saturday in October
October 24
- National Food Day
- National Bologna Day
- United Nations Day
- National Mother-in-Law Day – Fourth Sunday in October
October 25
October 26
- National Financial Crime Fighter Day
- National Tennessee Day
- National Day of the Deployed
- National Mule Day
- National Pumpkin Day
- National Mincemeat Day
October 27
October 28
October 29
- National Cat Day
- National Oatmeal Day
- National Hermit Day
- World Stroke Day
- National Pharmacy Buyer Day – Friday of Last Full Week in October
- National Frankenstein Friday – Last Friday in October
- National Breadstick Day – Last Friday in October
October 30
- National Speak Up For Service Day
- National Publicist Day
- National Candy Corn Day
- National Trick or Treat Day – Last Saturday in October
October 31
- National Doorbell Day
- National Caramel Apple Day
- National Knock-Knock Jokes Day
- National Magic Day
- Girl Scout Founder’s Day
- Halloween
*Day * – New Proclamation
