| PEC | Pacific Endurance Championship 
| Others |
| PEC | Pacific Energy Center
| Others |
| PEC | Pacific Eye Clinic
| Others |
| PEC | Packard at El Camino
| Others |
| PEC | Packet Exchange Cycle
| Others |
| PEC | Pakistan Engineering Council
| Others |
| PEC | Pancreatic Exocrine Cells
| Others |
| PEC | Panther Enthusiasts Club
| Others |
| PEC | Parallel Elastic Component
| Others |
| PEC | Parent Education Consortium
| Others |
| PEC | Parents Educating Children
| Others |
| PEC | Partido Estat Catala
| Others |
| PEC | Partner e-Learning Connection
| Others |
| PEC | Partner Education Connection
| Others |
| PEC | Peace Education Commission
| Others |
| PEC | Peacebuilding Evaluation Consortium
| Others |
| PEC | Pedernales Electric Cooperative
| Others |
| PEC | Pediatric Emergency Care
| Others |
| PEC | Peel Engineering Company
| Others |
| PEC | Pelican, Alaska USA
| Others |
| PEC | Peninsula Engineers Council
| Others |
| PEC | Pennsylvania Environmental Council
| Others |
| PEC | Pentecostal European Conference
| Others |
| PEC | People's Electric Cooperative
| Others |
| PEC | People's Emergency Center
| Others |
| PEC | Percutaneous Endoscopic Colostomy
| Others |
| PEC | Perfect Electric Conductor
| Others |
| PEC | Perfect Electrical Conductor
| Others |
| PEC | Perinatal Evaluation Center
| Others |
| PEC | Perinatal Evaluation Centre
| Others |
| PEC | Periodic Error Correction
| Others |
| PEC | Peripheral Event Controller
| Others |
| PEC | Perivascular Epithelioid Cell
| Others |
| PEC | Perodua Eco Challenge
| Others |
| PEC | Perseverance, Efficiency, Courtesy
| Others |
| PEC | Persistently Educating the Customer
| Others |
| PEC | Personal and Extenuating Circumstances
| Others |
| PEC | Personal Effects Coverage
| Others |
| PEC | Personal Embroidery Card
| Others |
| PEC | Personal Extended Curriculum
| Others |
| PEC | Personal Extenuating Circumstances
| Others |
| PEC | Petrolimex Engineering Joint Stock Company
| Others |
| PEC | Photo-Electric Cell
| Others |
| PEC | Physical Electronics Conference
| Others |
| PEC | Physicians Emergency Certificate
| Others |
| PEC | Picture Explanation Communication
| Others |
| PEC | Piedmont Environmental Council
| Others |
| PEC | Pierre E Chartier
| Others |
| PEC | Pinnacle Education Collaborative
| Others |
| PEC | Plain English Campaign
| Others |
| PEC | Planning and Environmental Commission
| Others |
| PEC | Planning Environmental Commission
| Others |
| PEC | Playstation Emulation Cheater
| Others |
| PEC | Political Emotional Citizen
| Others |
| PEC | Polymer Engineering Center
| Others |
| PEC | Pondicherry Engineering College
| Others |
| PEC | Porsche Enthusiasts Club
| Others |
| PEC | Porsche Experience Centre
| Others |
| PEC | Post Education Consortium
| Others |
| PEC | Posta Elettronica Certifcata
| Others |
| PEC | Posta Elettronica Certificata
| Others |
| PEC | Potential Ecological Condition
| Others |
| PEC | Potential Energy Curve
| Others |
| PEC | Power and Endurance Combination
| Others |
| PEC | Power Electronics Carrier
| Others |
| PEC | Practical Environmental Consultants
| Others |
| PEC | Pre Existing Conditions
| Others |
| PEC | Predicted Effect Concentration
| Others |
| PEC | Predicted Environmental Concentration
| Others |
| PEC | Predicted Environmental Concentrations
| Others |
| PEC | Prediction Error Curves
| Others |
| PEC | Prefabricated Electrical Center
| Others |
| PEC | President's Export Council
| Others |
| PEC | Presidential Exploratory Committee
| Others |
| PEC | Pressure Exchange Chamber
| Others |
| PEC | Pressurized Engine Control
| Others |
| PEC | previous Executive Committee
| Others |
| PEC | Priesthood Executive Committee
| Others |
| PEC | Primary Effort Coordinator
| Others |
| PEC | Primary Engineering Control
| Others |
| PEC | Primary Enterprise Controller
| Others |
| PEC | Prince Edward County
| Others |
| PEC | Princeton Election Consortium
| Others |
| PEC | Princeton Entrepreneurship Council
| Others |
| PEC | Privacy and Electronic Communications
| Others |
| PEC | Priyadarshini Engineering College
| Others |
| PEC | Pro Elite Community
| Others |
| PEC | Pro Evolution Cars
| Others |
| PEC | Process Engineering Corporation
| Others |
| PEC | Product Engineering Code
| Others |
| PEC | Product Engineering Corporation
| Others |
| PEC | Product Engineering Corps
| Others |
| PEC | Professional Education Center
| Others |
| PEC | Professional Education Committee
| Others |
| PEC | Professional Education Competencies
| Others |
| PEC | Professional Education Conference
| Others |
| PEC | Professional Educational Conference
| Others |
| PEC | Professional Electrical Contractor
| Others |
| PEC | Professional Engineering Consultants
| Others |
| PEC | Professional Engineers of Colorado
| Others |
| PEC | Professional Executive Committee
| Others |
| PEC | Program Element Code
| Others |
| PEC | Progress Education Community
| Others |
| PEC | Project Engineering Consultants
| Others |
| PEC | Project Engineering Consulting
| Others |
| PEC | Project Exemption Certificates
| Others |
| PEC | Propeller Electronic Control
| Others |
| PEC | Proposta de Emenda Constitucional
| Others |
| PEC | Proximity Effect Correction
| Others |
| PEC | Psychiatric Emergency Center
| Others |
| PEC | Public Education Commission
| Others |
| PEC | Pulmonary Ejection Click
| Others |
| PEC | Pulsed Eddy Current
| Others |
| PEC | Punjab Examination Commission
| Others |
| PEC | The Picture Exchange Communication
| Others |