| 1 | National Brothers and Sisters Day | May 2nd |
| 2 | National Paranormal Day | May 3rd |
| 3 | National Hoagie Day | May 5th |
| 4 | National Nurses Day | May 6th |
| 5 | International No Diet Day | May 6th |
| 6 | World Password day | May 6th |
| 7 | National Have a Coke day | May 8th |
| 8 | World Migratory Bird Day | May 8th |
| 9 | National Moscato Day | May 9th |
| 10 | National Clean Up Your Room Day | May 10th |
| 11 | National Shrimp Day | May 10th |
| 12 | National Eat What You Want Day | May 11th |
| 13 | National Limerick Day | May 12th |
| 14 | International Hummus Day | May 13th |
| 15 | National Buttermilk Biscuit Day | May 14th |
| 16 | National Chocolate Chip Day | May 15th |
| 17 | National Maritime Day | May 22nd |
| 18 | National Wine Day | May 25th |
| 19 | National Brisket Day | May 28th |
