Holy Trinity School or Holy Trinity Catholic School may refer to:
Canada
- Holy Trinity School (Richmond Hill), Ontario
India
- Holy Trinity School, Allahabad, Uttar Pradesh; affiliated with Boys' High School & College
- Holy Trinity School, Kanjikode, Kerala
United Kingdom
- Holy Trinity School, Crawley, West Sussex, England
- Holy Trinity School, Kidderminster, Worcestershire, England
- Holy Trinity School, Guildford, Surrey, England
United States
- Holy Trinity Catholic School, Birmingham, Alabama
- Holy Trinity Catholic Schools, headquartered in Fort Madison, Iowa
- Holy Trinity School (Washington, D.C.)