- Clergy Appreciation Month
- World Hunger Awareness Month
- LGBTQ+ History Month
- Diversity Awareness Month
- Filipino American History Month
- Breast Cancer Awareness Month
- Diabetes Awareness Month
- National Disability Employment Awareness Month
- National Domestic Violence Awareness Month
- 10/1 – International Day of Older Persons
- 10/3 – Rosh Hashanah (begins at sunset 10/2)
- 10/6 – World Communion Sunday
- 10/10 – World Mental Health Day
- 10/12 – Yom Kippur (begins at sunset 10/11)
- 10/13 – Access Sunday and Disabilities Awareness Week
- 10/14 – Indigenous Peoples’ Day
- 10/20 – Children’s Sabbath/Laity Sunday
- 10/20 – National Pastoral Care Week begins
- 10/24 – United Nations Day
- 10/26 – National Make a Difference Day
- 10/27 – UCC Higher Education Sunday
- 10/31 – Reformation/Reconciliation Day
- 10/31 – Halloween/Harvest Fest
- 10/31 – Diwali (Hindu Festival of Lights)