Other
- Assured shorthold tenancy, a form of Assured tenancy with limited security of tenure
- Asturian language, a Romance language spoken in Asturias, Spain (ISO 639 alpha-3, ast)
- Arsenal Supporters' Trust, London, UK. Arsenal FC's critical friend of supporters and shareholders
- Athlitikos Syllogos Trikala 2000 BC, a top tier Greek basketball team
- Astana Team, the UCI code for the professional road bicycle racing team
- Anti Structure Tandem, a type of tandem-charge where the second charge can be delayed so that it explodes deep inside the structure
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