- adjutant: an officer who acts as military assistant to a more senior officer
- (aides) Pluto: (Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone
- Aide was the Basque numenistic deity of the air. She could manifest herself in both good (gentle breeze) and evil (storm wind) forms.
- The Advanced Intrusion Detection Environment (AIDE) was initially developed as a free replacement for Tripwire licensed under the GPL.
- AIDES is a French community-based non-profit organisation that was founded in 1984 by Daniel Defert following the death of his lifelong companion Michel Foucault. The name is a word play on aides ((several) helps in French) and AIDS.
- (Aides (skipper)) Aides is a genus of skippers in the family Hesperiidae.
- aide-de-camp (ADC), being an assistant given the opportunity to understudy a senior commander; also called "braider" as a result of the distinctive aiguillette or shoulder CORD worn by such AIDEs, being the OFFICER equivalent of HOUSE MOUSE. ...
- a minor vassal, representative of a vocational class or group.