May Monthly Events
Unless otherwise stated, these are generally observed in the US only.

Occasion Sponsor
Allergy/Asthma Awareness Month Allergy Council of America
Arthritis Month Arthritis Foundation
Better Hearing and Speech Month (click here for more info)
Better Sleep Month Better Sleep Council
Breathe Easy Month (click here for more info)
Correct Posture Month American Chiropractic Assoc.
Digestive Diseases Awareness Month (click here for more info)
Hepatitis Awareness Month (click here for more info)
High Blood Pressure Month (click here for more info)
Huntington's Disease Awareness Month (click here for more info)
Melanoma/Skin Cancer Detection and Prevention Month (click here for more info)
Mental Health Month The National Mental Health Assoc.
Mental Health Week  (Canada) Canadian Mental Health Association
National Barbeque Month  Barbeque Industry Assoc.
National Bike Month  League of American Bicyclists
National Comfort Month Country Living Magazine
National Community Action Month National Coalition for the Homeless
National Egg Month American Egg Board
National High Blood Pressure Education Month National Heart, Lung & Blood Institute
National Photo Month Photo Marketing Assoc.
National Physical Fitness and Sports Month Presidents Council on Physical Fitness & Sports
National Salad Month The Assoc. for Dressings & Sauces
National Scrapbooking Month (click here for more info)
Neurofibromatosis Month (click here for more info)
Older Americans Month (click here for more info)
Osteoporosis Prevention Month (click here for more info)
Sight-Saving Month (click here for more info)
Stroke Awareness Month American Heart Assoc.
Tuberous Sclerosis Awareness Month (click here for more info)
Trauma Awareness Month (click here for more info)