Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

Filters1

2LMN, Inc.

Lancaster, OH

Your Trusted Engineering Partner

WebsitePhone4 offices10 leaders
Service: Land DevelopmentService: Site Drainage and Grading PlansIndustry: InfrastructureType: Civil Engineering+50 more

3D Engineering Solutions, LLC

Cincinnati, OH

Measuring & Modeling Quality

WebsitePhone1 office2 credentials
Service: 3D Laser Scanning & DigitizingService: Short Range 3D Laser ScanningIndustry: AerospaceType: Materials Testing+30 more

4D Systems

Flint, MI

The future of manufacturing is digital. Are you ready?

WebsitePhone3 offices5 credentials
Service: Controls EngineeringService: Control System IntegrationIndustry: ManufacturingType: Automation & Controls+25 more

7NT Enterprises, LLC

Miamisburg, OH

Proper Execution with Precision

WebsitePhone1 office9 projects
Service: Drilling ServicesService: Rock Coring and Soil SamplingIndustry: WastewaterType: Geotechnical Engineering+21 more

A&A Engineering

Toledo, OH

Innovative, Trusted Structural Engineering Since 1996

WebsitePhone1 office11 leaders
Service: Core StructuresService: Metal BuildingsIndustry: CommercialType: Civil Engineering+26 more

A&B Foundry, Machining, and Fabrications

Franklin, OH

Engineering Excellence + Inspiring Innovation

WebsitePhone1 officeUpdated Jun 2026
Service: CastingsService: Air Set MoldingIndustry: AerospaceType: Industrial Engineering+32 more

AGarvey LLC

Xenia, OH

Protecting Those Who Protect Us

WebsitePhone1 office3 leaders
Service: Decontamination SystemsService: Mask Cleaning & DecontaminationIndustry: DefenseType: Defense Engineering+12 more

AKT Peerless Environmental Services

Dunwoody, GA

AKT Peerless Environmental Services is an environmental consulting and redevelopment firm with more than 35 years of experience and offices across the Midwest, Southeast, and coasts. It serves developers, real estate professionals, financial institutions, government agencies, industrial and manufacturing clients, and petroleum companies. AKT Peerless delivers environmental due diligence, brownfield redevelopment, storage tank compliance, vapor intrusion assessment, environmental remediation, construction loan monitoring, industrial hygiene, sustainability services, and economic development incentive consulting. Its tank services division, AKT Tank Services, focuses on underground and aboveground storage tank work for fuel companies and transportation clients across the Northeast and Midwest.

WebsitePhone12 offices6 leaders
Service: Real Estate Environmental Risk ManagementService: Phase I And Phase II Environmental Site AssessmentsIndustry: Land DevelopmentType: Environmental Engineering+28 more

AMG, Inc.

Dayton, OH

Industrial Facility Engineering

WebsitePhone1 office12 projects
Service: Process EngineeringService: PFD and P&ID DevelopmentIndustry: ChemicalsType: Automation & Controls+75 more

Abercrombie & Associates, Inc.

Cincinnati, OH

Civil Engineering and Land Surveying

WebsitePhone1 office5 projects
Service: Civil EngineeringService: Roadway and utility design for private and public developmentsIndustry: CommercialType: Civil Engineering+36 more

Acoustical Systems Inc

Dayton, OH

More Than 45 Years Experience in Noise Control

WebsitePhone1 office3 credentials
Service: Acoustical Consulting and EngineeringService: Architectural Acoustics ConsultingIndustry: CommercialType: Acoustic Consulting+18 more

AdvanceBio LLC

Milford, OH

Biofuels and biochemical industry consultants

WebsitePhone1 office1 leaders
Service: Commercial Bio-Based Process EngineeringService: General Project ConsultingIndustry: Biomass & BioenergyType: Owner's Engineer+15 more

Advanced Engineering Consultants

Columbus, OH

Advanced Engineering Consultants specializes in providing mechanical, electrical, plumbing, fire protection, technology, and utilities engineering design and construction administration services for the built environment. Established in 1998, the practice works collaboratively with owners, architects, and contractors across the Midwest, the nation, and globally. It has completed nearly 2,000 projects across diverse sectors including government, healthcare, education, and commercial markets.

WebsitePhone4 offices6 projects
Service: Mechanical EngineeringService: HVAC Design and UpgradesIndustry: FederalType: MEP+25 more

Advanced Resources International, Inc.

Arlington, VA

Pioneering the Past. Innovating the Future.

WebsitePhone3 offices13 projects
Service: Unconventional Oil & GasService: Shale Gas and Tight Oil Resource AssessmentIndustry: Oil & GasType: Petroleum Engineering+22 more

Advantic LLC

Miamisburg, OH

Advantic LLC is a structural design-build firm based in Miamisburg, Ohio, delivering turnkey structural systems that integrate advanced composite materials with in-house fabrication and installation. Advantic specializes in lightweight fiber-reinforced polymer (FRP) and multi-material structural solutions for data center, industrial, edge computing, and AI infrastructure clients, and holds 50-state PE stamping capabilities.

WebsitePhone1 officeUpdated Jun 2026
Service: Structural DesignService: Engineer of Record ServicesIndustry: Data CentersType: Structural Engineering+13 more

Algebra AEC, LLC

Cleveland, OH

MEP & Sustainability Consulting

WebsitePhone1 office18 projects
Service: MEP EngineeringService: HVAC EngineeringIndustry: HealthcareType: MEP+35 more

All-Phase Power, LLC

Medina, OH

Powering Your Future

WebsitePhone2 offices2 leaders
Service: Electrical ContractingService: Residential Electrical ServicesIndustry: CommercialType: Electrical Engineering+14 more

Allied Erecting & Dismantling Co., Inc.

Youngstown, OH

Allied Erecting & Dismantling Co., Inc. (AED) specializes in the selective and mass dismantling of complex industrial structures. Established in 1973 in Youngstown, Ohio, AED has completed some of the largest and most challenging industrial dismantling projects in the United States, pioneering techniques and equipment for heavy industrial decommissioning. It operates as a wholly owned subsidiary of Allied Consolidated Industries, Inc. (ACI) and draws on sister companies specializing in scrap processing, structural and civil engineering, mechanical engineering, industrial manufacturing, and heavy fabrication.

Website1 office8 credentialsFounded 1973
Service: Industrial DismantlingService: Selective DismantlingIndustry: IndustrialType: Industrial Engineering+12 more

Allison Structural Group

Columbus, OH

Allison Structural Group is a Columbus, Ohio-based structural engineering and inspection consulting practice serving developers, architects, contractors, realty companies, and facility owners. It provides structural design for new and existing buildings, site civil consulting, condition assessments, and industrial support structures. Project types range from residential additions and tenant improvements to industrial plant upgrades and commercial property acquisitions. The practice delivers projects using BIM and Revit for clear, coordinated design documentation.

WebsitePhone2 offices6 projects
Service: Structural EngineeringService: Structural design for new buildingsIndustry: CommercialType: Architecture & Engineering+53 more

Alphaport, Inc.

Strongsville, OH

Advanced engineering, mission assurance, and technology solutions

WebsitePhone1 office2 projects
Service: Aerospace EngineeringService: Rocket and Spacecraft Ignition SystemsIndustry: DefenseType: Aerospace Engineering+14 more

American Engineering Group LLC

Akron, OH

Fast-Track Your Product From Concept To Reality

WebsitePhone1 office5 projects
Service: Product Design & DevelopmentService: Product ideation and concept testingIndustry: DefenseType: Mechanical Engineering+37 more

Andrew Brock Consulting Engineer LLC

Toledo, OH

Andrew Brock Consulting Engineer LLC is a structural, civil, and specialty delegated engineering practice headquartered in Toledo, Ohio. Serving clients throughout the Midwest and Western states, it provides engineer-of-record services for K-12 and post-secondary schools, industrial facilities, warehouses, hospitals, and commercial developments. The practice has specialized expertise in heavy seismic, high-wind, and Risk Category III and IV facility design, employing 3D building information modeling (BIM) to coordinate seamlessly with architects, contractors, and other consultants.

Website1 office5 leaders3 credentials
Service: Structural EngineeringService: Structural Engineer of Record ServicesIndustry: EducationType: Structural Engineering+27 more

Annex Engineering Group

Columbus, OH

Founded in 2017, Annex Engineering Group is a service-oriented MEP and fire protection engineering firm based in Columbus, Ohio. Annex offers mechanical, electrical, plumbing, and fire protection coordination engineering for projects ranging from office remodels, multi-family residential, and restaurants to manufacturing/industrial facilities and historical renovations. Licensed in 49 states and Washington D.C., Annex serves as the prototype engineer for several national clients, establishing design standards that reduce construction costs and timelines while increasing consistency and quality.

WebsitePhone1 officeFounded 2017
Service: Mechanical EngineeringService: HVAC System DesignIndustry: CommercialType: MEP+33 more

Apex Engineering & Surveying

Middletown, OH

Apex Engineering & Surveying is a civil engineering and land surveying firm based in Middletown, Ohio, providing cost-effective and timely engineering solutions since 1999. The team delivers personal service for single and multi-family residential developments, commercial and mixed-use sites, roadway and utility projects, and industrial work from concept through construction permitting. Services include grading and road design, construction engineering, water resources engineering, utilities design, and property line locating.

WebsitePhone1 officeFounded 1999
Service: Civil Engineering ServicesService: Grading and Road DesignIndustry: ResidentialType: Civil Engineering+10 more