- Every year on October 21, we mark Police Commemoration Day.
- October 21 is designated as World Iodine Deficiency Disorders Prevention Day each year.
- October 22nd is International Stuttering Awareness Day each year.
Every year on October 23, we mark International Snow Leopard Day. - October 24 is designated each year as World Polio Day.
- October 24 is the day on which United Nations Day is observed annually.
- October 24–October 31 is Global Media and Information Literacy Week.
The dates of United Nations Disarmament Week are October 24–30. - Every year on October 26, Merger Day is observed.
October 27 is World Audiovisual Heritage Day each year. - October 27 is designated as Infantry Day each year.
