Private Medical Insurance, a type of insurance.

Priority Mail International, mailing service offered by the United States Postal Service.

Proof by mathematical induction.

Portable Management Interface, a platform-dependent interface defined by Sun Microsystems used in network management

Precious Moments, Inc., a company that designs and distributes Precious Moments products.

Presidential Management Internship program now known as the Presidential Management Fellows Program.

Private Mortgage Insurance, a credit enhancement insurance.

Peoples Ministry Inc., A Christian ministry in Toronto, Ontario, Canada, that operates Peoples Christian Academy.

Project Management Institute, an organization advocating the project management profession.

Purchasing Managers Index, a measure of manufacturing activity.

Point of Maximum Impulse, the point on the chest where the impulse of the left ventricle is strongest.

Precision Monolithics, Inc., a semiconductor manufacturing company

Pointwise Mutual Information, a measure in statistical probability theory.

Post mortem interval, the time that has elapsed since a person has died.

Pigeon Mountain Industries, an American rope company.

People's Mujahedin of Iran, Socialist political organization in exile, mostly in Iraq

Picture Music International, was a division of EMI that specialised in music video releases.

Product Manufacturing Information, shown on 3D CAD models of components and products.

Son Sant Joan Airport in Majorca, (IATA airport code: PMI).