What does MACM stand for?

Married Asian Christian Male - Classified advertising

Master Chief Machine Accountant - Later, DPCM - Navy rating

Master of Arts in Christian Ministries (PGP)

Master of Arts in Church Music (PGP)

Member of the Association of Computing Machines (ODA)

Military Aid to Civil Ministries - British military (DMA)

Motorized Air Cycle Machine (MCD)

Multi Architecture Cost Model (ACAE)