- a person of less than normal intelligence
- below normal or average; "after the floods the harvests were subnormal"; "subnormal intelligence"
- (subnormality) retardation: lack of normal development of intellectual capacities
- Subnormality is a weekly satirical and often absurdist webcomic by cartoonist Winston Rowntree. The strip appears at Rowntree's own webcomic-site and occasionally at Cracked, where Rowntree also publishes the related webcomic Abnormality.