Most petroleum technicians do not participate in a union, but the United Steelworkers is a union that advocates on behalf of oil workers. Petroleum technicians can also join the American Association of Petroleum Geologists if they are interested in advancing their career.
- 3-D Printing Specialists
- Advanced Manufacturing Engineers
- Advanced Manufacturing Technicians
- Aeronautical and Aerospace Technicians
- Aerospace Engineers
- Air Quality Engineers
- Audio Recording Engineers
- Automation Engineers
- Automotive Engineering Technicians
- Automotive Engineers
- Avionics Engineers
- Avionics Technicians
- Biochemical Engineers
- Biofuels Processing Technicians
- Biofuels Production Managers
- Biofuels/Biodiesel Technology and Product Development Managers
- Biomass Plant Technicians
- Biomass Power Plant Managers
- Biomedical Engineers
- Broadcast Engineers
- Building Automation Systems Engineers
- Building Performance Diagnosticians
- Ceramics Engineers
- Chemical Engineers
- Chemical Technicians
- Chemists
- Chief Robotics Officer
- Civil Engineering Technicians
- Civil Engineers
- Coal Miners
- Corporate Climate Strategists
- Digital Workplace Experience Engineers
- Divers and Diving Technicians
- Driverless Car Engineers
- Drone Engineers
- Electrical Engineering Technologists
- Electrical Engineers
- Electricians
- Electromechanical Engineering Technologists
- Electronics Engineering Technicians
- Electronics Engineers
- Embedded Systems Engineers
- Energy Brokers
- Energy Conservation Technicians
- Energy Consultants
- Energy Efficiency Engineers
- Energy Transmission and Distribution Workers
- Engineering Technicians
- Engineers
- Environmental Engineers
- Ethical Sourcing Officer
- Forensic Engineers
- Fuel Cell Engineers
- Fuel Cell Technicians
- Futurists
- Genetic Engineers
- Geodetic Surveyors
- Geological Technicians
- Geologists
- Geophysicists
- Geotechnical Engineers
- Geothermal Production Managers
- Geothermal Technicians
- Groundwater Professionals
- Hardware Engineers
- Hazardous Waste Management Specialists
- Hazardous Waste Management Technicians
- Hydroelectric Plant Technicians
- Hydroelectric Production Managers
- Hydropower and Marine Energy Industry Workers
- Hypersonics Engineers
- Hypersonics Technicians
- Industrial Engineering Technicians
- Industrial Engineers
- Information Technology Infrastructure Engineers
- Laboratory Testing Technicians
- Landmen
- Line Installers and Cable Splicers
- Manufacturing Engineering Technologists
- Manufacturing Engineers
- Marine Engineers
- Materials Engineers
- Mechanical Engineering Technicians
- Mechanical Engineers
- Mechatronics Engineers
- Metallurgical Engineers
- Metallurgical Technicians
- Meter Readers, Utilities
- Methane/Landfill Gas Collection System Operators
- Methane/Landfill Gas Generation System Technicians
- Mining Engineers
- Nanosystems Engineers
- Non-Destructive Testing Specialists
- Nuclear Engineers
- Nuclear Reactor Operators and Technicians
- Occupational Safety and Health Workers
- Optical Engineers
- Packaging Engineers
- Petroleum Engineers
- Plastics Engineers
- Plastics Technicians
- Power Plant Workers
- Quality Control Engineers
- Quality Control Technicians
- Radiation Protection Technicians
- Radio Frequency Engineers
- Radio Frequency Identification Device Specialists
- Remote Health Care Engineers
- Renewable Energy Careers
- Renewable Energy Engineers
- Robotics Engineers
- Robotics Integrators
- Robotics Technicians
- Roustabouts
- Software Engineers
- Solar Energy Sales Representatives
- Solar Engineers
- Solar Thermal Installers and Technicians
- Spacecraft Test Technicians
- Stationary Engineers
- Surveying and Mapping Technicians
- Surveyors
- Traffic Engineers
- Transportation Engineers
- Truck Drivers
- Wind Energy Engineers
- Wind Energy Operations Managers
- Wind Energy Project Managers