• Genetic engineering (of whole genes and their chromosomes)
• Immunology and biomolecular/biochemical engineering
• Engineering of DNA and RNA (related to genetic engineering)

• Metallurgical engineering, works with metals
• Ceramic engineering works with raw oxide materials (e.g. alumina oxide) and advanced materials that are polymorphic, polycrystalline, oxide and non-oxide ceramics
• Polymer engineering works with polymer materials
• Crystal engineering works with the design and synthesis of molecular solid-state structures
• Biomaterials engineering works with natural and living systems

• Petroleum refinery engineering works on the manufacture of refined products
• Plastics engineering works on the plastics products
• Paper engineering works on paper products
• Textile engineering works on fiber, textile and apparel products.

• Ecological engineering, the design, monitoring and construction of ecosystems
• Fire protection engineering, the application of engineering to protect people and environments from fire and smoke
• Sanitary engineering, the application of engineering methods to improve sanitation of human communities
• Wastewater engineering, Wastewater engineering is a type of engineering that comes from civil engineering and environmental engineering. A wastewater engineer determines the best way to transport or collect rainwater for human populations. Wastewater engineering also deals with the transportation and cleaning of blackwater, greywater and irrigation water. Wastewater treatment and water reclamation are areas of concern in this field. Wastewater engineers map out topographical and geographical features of Earth to determine the best means of collection. They use sonar scanning in wells to determine volumes of water that can be used for human consumption. Using these types of data they are able to provide a means of collecting water. After collecting the water, it is their job to transport it to where it can be made available for use.
• Municipal or urban engineering, civil engineering applied to municipal issues such as water and waste management, transportation networks, subdivisions, communications, hydrology, hydraulics, etc.

• Mining engineering, the exploration, extraction and processing of raw materials from the Earth
• Foundation (engineering), the engineering of below-ground foundations that support superstructures

• Earthquake engineering, the behavior of structures subject to seismic loading
• Wind engineering, the analysis of wind and its effects on the built environment
• Architectural engineering, application of engineering principles to building design and construction
• Ocean engineering, the design of offshore structures

With the process of mineral extraction some amount of waste material and other byproducts are generated which are the primary source of pollution in the vicinity of mines. Mining activities by their nature cause a disturbance of the natural environment in and around which the minerals are located. Mining engineers must therefore be concerned not only with the production and processing of mineral commodities, but also with the mitigation of damage to the environment both during and after mining as a result of the change in the mining area.

• Traffic engineering, a branch of transportation engineering focusing on the infrastructure necessary for transportation
• Highway engineering, a branch of engineering that deals with major roadways and transportation systems involving automobiles. Highway engineering usually involves the construction and design of highways.

• Subsurface Utility Engineering(SUE), a branch of utility engineering that involves managing certain risks associated with utility mapping at appropriate quality levels and communication of utility data to concerned parties.

• Hydraulic engineering, concerned with the flow and conveyance of fluids, principally water; intimately related to the design of pipelines, water supply network, drainage facilities (including bridges, dams, levees, channels, culverts, storm sewers) and canals.
• River engineering, is the process of planned human intervention in the course, characteristics, or flow of a river with the intention of producing some defined benefit—to manage the water resources, to protect against flooding, or to make passage along or across rivers easier.
• Coastal engineering, the study of the processes ongoing at the shoreline and construction within the coastal zone, often directed at combating erosion of coasts or providing navigational access.
• Groundwater engineering, involves the analysis, monitoring and often modeling of groundwater source to better understand how much remains and if the water can be used for e.g. recharging reservoirs and irrigation.

• Control engineering, focuses on the modeling of dynamic systems and the design of controllers using electrical circuits, digital signal processors and microcontrollers
• Telecommunications engineering, focuses on the transmission and processing of information through communications channels that are created by making use of applied electromagnetism in the physical world and are oftentimes divided in wired and wireless.
• Digital electronics systems engineering, covering topics such as microelectronics which is better understood as hardware engineering plus software engineering, which in turn covers topics such as embedded systems, digital signal processing, digital image processing, real time operating systems and ultimately computing and as a result, originally computer engineering is a branch of electronics as well.

• Software engineering, the application of a systematic, disciplined, quantifiable approach to the development, operation and maintenance of software and the study of these approaches; that is, the application of engineering and computer science to software.^[3]
• Hardware engineering, designing, developing and testing various computer equipment. Can range from circuit boards and microprocessors to routers.
• Network engineering, designing, deploying and maintaining computer networks, such as corporate networks or the Internet.

• Heating, ventilating

• Automotive engineering, bicycles, motorcycles, automobiles, buses and trucks and new telecommunication vehicles
• Naval architecture, marine vehicles and structures
• Aerospace engineering, airplanes, helicopters, drones and spacecraft
• Marine engineering, boats, ships, oil rigs and other marine vessels or structures, oceanographic engineering

Field of engineering that designs, construct and maintains different types of power plants. Serves as the prime mover to produce electricity.

• Diesel engine (ICE) power plants

• Aeronautics, the design and development of aircraft and air traffic control systems
• Astronautics, spacecraft, with an emphasis on spacecraft systems, ground control systems and orbital mechanics

• Aquaculture engineering, cultured aquatic species and their production systems
• Bioprocess engineering, products from biological materials
• Ecological engineering, ecosystems
• Food engineering, food processing, food machinery, packaging, ingredient manufacturing, instrumentation and control.

• Automation/control systems/mechatronics/robotics
• Computer-aided drawing and design (CADD)
• General

• Bioinstrumentation, devices and tools used in the diagnosis and treatment of disease.
• Bioinformatics, digital tools to collect and analyze biomedical data, such as DNA
• Biomechanics, motion, material deformation, transport of chemical substances across biological membranes and flow inside the body. Artificial heart valves, artificial kidneys and artificial hips.
• Biomaterial, materials implanted in the body
• Biosignal processing, recording and processing biological signals for diagnostic and therapeutic purposes, such as cardiac signals, speech recognition and brain activity
• Biotechnology, use of living systems to make useful products such as pharmaceuticals and foods
• Clinical engineering, hospital-related products, including data management, instruments and monitoriing systems
• Medical imaging, MRIs, EEGs, ultrasound, PET
• Neural engineering, replacement/restoration of lost sensory and motor abilities, neurorobots, neuro electronics.
• Pharmaceutical engineering, pharmaceuticals and pharmaceutical delivery
• Rehabilitation engineering, products that aid individuals with physical and other impairments, to improve e.g., mobility, seating and communication

• Biochemical engineering, processes that involve biological organisms or molecules such as bioreactors
• Biomedical engineering, the application of engineering principles and techniques to the medical and biological sciences
• Genetic engineering, manipulate genes in organisms
• Protein engineering, protein synthesis

• Mechanical engineering
  • Heating, ventilation and air conditioning
  • Public health engineering: water services, drainage and plumbing
• Lighting, including artificial and emergency lighting, low voltage systems, containment, distribution, distribution boards and switchgear
• Lightning protection
• Security, video and alarm systems
• Escalators and lifts
• Fire engineering, including fire detection and fire protection
• Building façade engineering
• Energy supply – gas, electricity and renewable sources

• Solar engineering, photovoltaic systems, solar thermal systems
• Wind engineering, wind turbines

• Manufacturing engineering, tools, equipment and processes
• Component engineering, optimal compents to be subsequently assembled into products.
• Systems engineering, logistics, team coordination, machinery control
• Construction engineering, buildings and other structures
• Safety engineering, safe operation and safe failure modes
• Reliability engineering, product durability

• Optomechatronics engineering
• Biomechatronics engineering
• Avionics, the design of electronics and systems on board an aircraft or spacecraft

• Materials nanoengineering creating Nanomaterials
• Biomedical nanoengineering creating Nanomedicine (Biosensors, Tissue engineering, Drug delivery, etc.)
• Instrumentation engineering creating Nanosensors
• Electronic nanoengineering creating Nanoelectronics

• Reservoir engineering, the flow of fluids in underground reservoirs
• Drilling engineering, well-drilling and fitting
• Production engineering, surfacing and refining well fluids

• Cryptographic engineering Cryptographic Engineering is the discipline of using cryptography to solve human problems. Cryptography is typically applied when trying to ensure data confidentiality, to authenticate people or devices, or to verify data integrity in risky environments.
• Information technology engineering, (ITE) or information engineering methodology (IEM) is a software engineering approach to designing and developing information systems. It can also be considered as the generation, distribution, analysis and use of information in systems.
• Teletraffic engineering Telecommunications traffic engineering, teletraffic engineering, or traffic engineering is the application of traffic engineering theory to telecommunications. Teletraffic engineers use their knowledge of statistics including queuing theory, the nature of traffic, their practical models, their measurements and simulations to make predictions and to plan telecommunication networks such as a telephone network or the Internet. These tools and knowledge help provide reliable service at lower cost.
• Web engineering focuses on the methodologies, techniques and tools that are the foundation of Web application development and which support their design, development, evolution and evaluation. Web engineering is multidisciplinary and encompasses contributions from diverse areas such as systems analysis and design, software engineering, hypermedia/hypertext engineering, requirements engineering, human-computer interaction, user interface, information technology engineering, information indexing and retrieval, testing, modeling and simulation, project management and graphic design and presentation.

• Systems engineering deals with work-processes, optimization methods and risk management tools. It overlaps technical and human-centered disciplines such as control engineering, industrial engineering, organizational studies and project management. Systems engineering ensures that all likely aspects of a project or system are considered and integrated into a whole.