| October 2021 | ||
|---|---|---|
| Date | Holiday | Where |
| October-2, Saturday | Mohandas Karamchand Gandhi Day | Hawaii (Designated Days) |
| October-3, Sunday | Children and Youth Day | Hawaii (Designated Days) |
| October-3, Sunday | Children's Day | Georgia (Designated Days) |
| October-3, Sunday | Stepparents Day | California (Designated Days) |
| October-3, Sunday | Water Professionals Appreciation Day | Georgia (Designated Days) |
| October-8, Friday | Bill Elliott Day | Georgia (Designated Days) |
| October-8, Friday | William a. Egan Day | Alaska (Designated Days) |
| October-9, Saturday | Leif Erikson Day | Colorado (Designated Days) |
| October-9, Saturday | Robert E. Lee Day | Arkansas (Memorial Days) |
| October-10, Sunday | Grandmothers Day | Illinois (Designated Days) |
| October-11, Monday | Columbus Day | Alabama, Arizona, Colorado, Connecticut, Federal, Florida, Georgia, Idaho, Illinois, Indiana, Maryland, Massachusetts, Missouri, Montana, Nebraska, New Jersey, New York, Pennsylvania, Rhode Island, Virginia, West Virginia (Public Holidays) |
| October-11, Monday | Columbus Day | US Banks (US Bank Holidays 2021) |
| October-11, Monday | Columbus Day | United States Postal Service (USPS Holidays 2021) |
| October-11, Monday | Discoverers' Day | Hawaii (Designated Days) |
| October-11, Monday | Indigenous Peoples Day | Maine (Public Holidays) |
| October-11, Monday | Native Americans Day | South Dakota (Public Holidays) |
| October-11, Monday | Veterans Day | Delaware (Public Holidays) |
| October-12, Tuesday | Columbus Day | Iowa (Designated Days) |
| October-12, Tuesday | Columbus Day | Arkansas (Memorial Days) |
| October-14, Thursday | Bird Day | Georgia (Designated Days) |
| October-14, Thursday | Dwight D. Eisenhower Day | Kansas (Designated Days) |
| October-15, Friday | White Cane Safety Day | Arkansas (Memorial Days) |
| October-16, Saturday | Dr. Norman E. Borlaug World Food Prize Day | Iowa (Designated Days) |
| October-17, Sunday | I Am An American Day | Florida (Designated Days) |
| October-17, Sunday | Respect for Our Elders Day | Hawaii (Designated Days) |
| October-17, Sunday | School Bus Drivers Appreciation Day | Georgia (Designated Days) |
| October-18, Monday | Alaska Day | Alaska (Public Holidays) |
| October-18, Monday | Alaska Territorial Guard Day | Alaska (Designated Days) |
| October-25, Monday | Larry Itliong Day | California (Designated Days) |
| October-29, Friday | Nevada Day | Nevada (Public Holidays) |
| October-31, Sunday | Youth Honor Day | Iowa (Designated Days) |