POSA may refer to:
- Pattern-Oriented Software Architecture, a series of books related to architectural patterns in the field of computer science
- Point-of-Sale Activation (or Point-of-Service Activation), gift cards that have no value until purchased and activated at check-out
- Public Order and Security Act (Zimbabwe), a piece of legislation in Zimbabwe
This disambiguation page lists articles associated with the title POSA.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: