OCM

OCM may refer to:

• OCM (gene), also known as LOC4951, a human gene

• O'Callaghans Mills, a small village in Ireland (local folkloric slang)

• Occupy Central Movement
• Ocean Colour Monitor, an instrument launched on the IRS-P4 satellite on 1999-May-26
• Office for Coordination and Management, a component of the European Space Agency
• Ohio Community Media, a newspaper company in the United States
• Oil cleansing method, an alleged skin-cleansing method
• Oil content meter, a measuring device used on Marine Oily Water Separators
• Oil-Cut Mud, in oil drilling parlance
• Oka Chinna Maata, a 1997 Telugu film starring Jagapati Babu
• Olympic Council of Malaysia
• On-camera meteorologist
• One Caribbean Media
• Online Condition Monitoring, for maintenance
• Open Cloud Manifesto, also known as the Cloud Computing Manifesto
• Optical Channel Monitor, a device for optical performance monitoring in fiber-optic communications networks

• Oracle Certified Master, a designation in the Oracle Certification Program
• Oracle Configuration Manager, a service of Oracle Corporation
• Ordained Clergy Member, name honorific used by clergymen
• Ordo Sancti Constantini Magni, Order of Saint Constantine the Great
• Organisation civile et militaire (English "Civilian and Military Organisation"), a group of the French Resistance
• Organizational Change Management
• Oriental Carpet Manufacturers, primarily an oriental rug manufacturing and trading company of Turkish-English Origin (in the 1980s it merged with two other giant rug companies to form Eastern Khayaam OCM before closing down)

• Oxidative Coupling of Methane