| Date | Event | Place |
| 1-Jan | New Year’s Day | National |
| 13-Jan | Lohri | National |
| 14-Jan | Makar Sankranti/Pongal | National |
| 20-Jan | Guru Govind Singh Jayanti | National |
| 26-Jan | Republic Day | National |
| Jan 30, 2021 | World Leprosy Day 2021 | World |
| Health Awareness Days in February 2021 | ||
| Feb 04, 2021 | World Cancer Day 2021 | World |
| Feb 09, 2021 | Toothache Day 2021 | World |
| 16-Feb | Vasant Panchami | National |
| Feb 28, 2021 | Rare Disease Day 2021 | World |
| Health Awareness Days in March 2021 | ||
| Mar 05, 2021 | Multiple Personality Day 2021 | World |
| 11-Mar | Maha Shivaratri/Shivaratri | National |
| Mar 11, 2021 | World Kidney Day 2021 | World |
| Mar 21, 2021 | World Down Syndrome Day 2021 | World |
| Mar 24, 2021 | World Tuberculosis Day 2021 | World |
| 29-Mar | Holi | National |
| Health Awareness Days in April 2021 | ||
| 2-Apr | Good Friday | National |
| Apr 02, 2021 | World Autism Awareness Day 2021 | World |
| Apr 07, 2021 | World Health Day 2021 | World |
| 14-Apr | Vaisakhi/Ambedkar Jayanti | National |
| Apr 17, 2021 | World Hemophilia Day 2021 | World |
| 21-Apr | Rama Navami | National |
| 25-Apr | Mahavir Jayanti | National |
| Apr 25, 2021 | DNA Day 2021 | World |
| Apr 25, 2021 | World Malaria Day 2021 | World |
| Apr 28, 2021 | World Day for Safety and Health at Work 2021 | World |
| Health Awareness Days in May 2021 | ||
| May 04, 2021 | World Asthma Day 2021 | World |
| May 05, 2021 | World Hand Hygiene Day 2021 | World |
| May 06, 2021 | International No Diet Day 2021 | World |
| May 08, 2021 | World Red Cross and Red Crescent Day 2021 | World |
| 9-May | Mother’s Day | National |
| May 12, 2021 | Chronic Fatigue Syndrome Day 2021 | World |
| May 12, 2021 | International Nurses Day 2021 | World |
| 14-May | Ramzan Id/Eid-ul-Fitar | National |
| May 18, 2021 | World AIDS Vaccine Day 2021 | World |
| 26-May | Buddha Purnima/Vesak | National |
| May 31, 2021 | World No Tobacco Day 2021 | World |
| Health Awareness Days in June 2021 | ||
| Jun 08, 2021 | World Brain Tumor Day 2021 | World |
| Jun 14, 2021 | World Blood Donor Day 2021 | World |
| Jun 18, 2021 | Autistic Pride Day 2021 | World |
| 20-Jun | Father’s Day | National |
| Jun 25, 2021 | World Vitiligo Day 2021 | World |
| Jun 26, 2021 | International Day against Drug Abuse and Illicit Trafficking 2021 | World |
| Health Awareness Days in July 2021 | ||
| 21-Jul | Bakr Id/Eid ul-Adha (Tentative Date) | National |
| 24-Jul | Guru Purnima | National |
| Jul 28, 2021 | World Hepatitis Day 2021 | World |
| Health Awareness Days in August 2021 | ||
| 15-Aug | Independence Day | National |
| 19-Aug | Muharram/Ashura (Tentative Date) | National |
| 22-Aug | Raksha Bandhan (Rakhi) | National |
| 30-Aug | Janmashtami | National |
| Health Awareness Days in September 2021 | ||
| Sep 10, 2021 | World Suicide Prevention Day 2021 | World |
| 10-Sep | Ganesh Chaturthi/Vinayaka Chaturthi | National |
| Sep 28, 2021 | World Rabies Day 2021 | World |
| Health Awareness Days in October 2021 | ||
| 2-Oct | Mahatma Gandhi Jayanti | National |
| Oct 03, 2021 | Virus Appreciation Day 2021 | World |
| Oct 10, 2021 | World Mental Health Day 2021 | World |
| 14-Oct | Maha Navami | National |
| 15-Oct | Dussehra | National |
| Oct 15, 2021 | Global Handwashing Day 2021 | World |
| Oct 16, 2021 | World Food Day 2021 | World |
| 19-Oct | Milad un-Nabi/Id-e-Milad (Tentative Date) | National |
| 20-Oct | Maharishi Valmiki Jayanti | National |
| Oct 20, 2021 | World Osteoporosis Day 2021 | World |
| Oct 22, 2021 | International Stuttering Awareness Day 2021 | World |
| Health Awareness Days in November 2021 | ||
| 4-Nov | Diwali/Deepavali | National |
| 5-Nov | Govardhan Puja | National |
| 6-Nov | Bhai Duj | National |
| 10-Nov | Chhat Puja (Pratihar Sashthi/Surya Sashthi) | National |
| Nov 12, 2021 | World Pneumonia Day 2021 | World |
| Nov 14, 2021 | World Diabetes Day 2021 | World |
| Nov 17, 2021 | World Prematurity Day 2021 | World |
| 19-Nov | Guru Nanak Jayanti | National |
| Health Awareness Days in December 2021 | ||
| Dec 01, 2021 | World AIDS Day 2021 | World |
| Dec 03, 2021 | International Day of People with Disability 2021 | World |
| 25-Dec | Christmas | National |
