SPA (countable and uncountable, plural SPAs)
- (UK, pensions) Initialism of state pension age.
- (web development) Initialism of single-page application.
- (networking) Initialism of single-packet authorization.
- (law) Initialism of special power of attorney.
- Initialism of Saudi Press Agency.
- APS, APs, ASP, PAS, PAs, PSA, Pas, Psa., SAP, asp, pas, s.ap., sap