- Ankylosing Spondylitis Awareness Month
- Bladder Cancer Awareness Month
- Brain Tumour Awareness Month
- Celiac Disease Awareness Month
- Cystic Fibrosis Month
- GBS/CIDP Awareness Month
- Hemochromatosis Awareness Month
- Hypertension Awareness Month
- Huntington Disease Awareness Month
- Li-Fraumeni Syndrome/TP53 Awareness Month
- Lupus Awareness Month
- MedicAlert Month
- Melanoma and Skin Cancer Awareness Month
- MS Awareness Month
- National Physiotherapy Month
- National Sun Awareness Month
- Preeclampsia Awareness Month
- Sexual Violence Prevention Month
- Speech and Hearing Month
- Vision Health Month
- National Physicians’ Day – May 1
- Mental Health Week – May 1 to 7
- National Heart Failure Awareness Week – May 1 to 7
- Von Hippel-Lindau (VHL) Syndrome Awareness – May 1 to 31
- International Day of the Midwife – May 5
- World Pulmonary Hypertension Day – May 5
- National Child and Youth Mental Health Day – May 7
- Check Your Skin Day – May 8*
- World Red Cross and Red Crescent Day – May 8*
- World Ovarian Cancer Day – May 8
- World Lupus Day – May 10
- National Nursing Week – May 10 to 16
- Canadian Viral Hepatitis Elimination Day – May 11
- Fibromyalgia Awareness Day – May 12
- International Awareness Day for Chronic Immunological and Neurological Diseases – May 12
- International Nurses Day – May 12
- Apraxia Awareness Day – May 14
- Naturopathic Medicine Week – May 14 to 20
- World Hypertension Day – May 17
- World IBD Day – May 19
- Parademic Services Week – May 21 to 27
- World Schizophrenia and Psychosis Day – May 24
- National Multiple Births Awareness Day – May 28
- National Reflexology Day – May 30
- World Multiple Sclerosis Day (MS) – May 30
- World No Tobacco Day – May 31
Dates taken from the Government of Canada website, learn more here