Company lists · Data refreshed September 2026
Top 25 Automation and instrumentation companies based in the United States
RevenueBase identified 3,182 automation and instrumentation companies headquartered in the United States as of September 2026 and tracks 194,801 professional contacts across them, including 75,647 with verified work emails. Houston is the largest hub.
This list covers automation and instrumentation companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest automation and instrumentation companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 47,277 contacts → | ||||
Partial evidence “Emerson (NYSE: EMR) is a global automation leader delivering solutions for the most demanding technology challenges.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 20,582 contacts → | ||||
Partial evidence “At Rockwell Automation, we connect the imaginations of people with the potential of technology to expand what is humanly possible, making the world more intelligent, more…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 11,641 contacts → | ||||
Indirect evidence “Ingersoll Rand Inc.(NYSE:IR), driven by an entrepreneurial spirit and ownership mindset, is dedicated to Making Life Better for our employees, customers, shareholders, and planet.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,743 contacts → | ||||
Indirect evidence “Sensata Technologies (NYSE: ST) is a global industrial technology company with more than 100 years of experience in mission-critical design and innovation of sensor-rich solutions…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 6,215 contacts → | ||||
Partial evidence “SMC Corporation is a global leader in automation technology and a trusted partner for innovation across industries.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4,770 contacts → | ||||
Indirect evidence “All 30k+ associates at Regal Rexnord have a shared purpose: Create a better tomorrow with sustainable solutions that power, transmit, and control motion.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 4,113 contacts → | ||||
Indirect evidence “AMETEK, Inc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3,475 contacts → | ||||
Indirect evidence “Swagelok industrial fluid system products and engineering services have helped the world contain, control, and transfer liquids and gases in critical applications since 1947.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,966 contacts → | ||||
Partial evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,558 contacts → | ||||
Indirect evidence “Moving the world forward.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,012 contacts → | ||||
Partial evidence “The sole mission of Mitsubishi Electric Automation Americas, is to support the factory automation needs of North and Latin American customers with combined sales, marketing…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,847 contacts → | ||||
Partial evidence “Our business is automation, and we envision a future in which people can do more, try more, and be more.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,695 contacts → | ||||
Partial evidence “Brooks is a leading provider of automation solutions with over 40 years of experience in the semiconductor industry.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,183 contacts → | ||||
Partial evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,159 contacts → | ||||
Partial evidence “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,073 contacts → | ||||
Partial evidence “Banner Engineering designs and manufactures industrial automation products including sensors, smart IIoT and industrial wireless technologies, LED lights and indicators…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 980 contacts → | ||||
Indirect evidence “CIRCOR International is a global manufacturer specializing in highly engineered, complex, and severe environment products that serve long-term, high growth infrastructure markets…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 938 contacts → | ||||
Partial evidence “As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 923 contacts → | ||||
Partial evidence “TMEIC Corporation, headquartered in Houston, Texas, designs, develops and engineers advanced automation systems, large AC and DC motors, photovoltaic inverters and variable…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 879 contacts → | ||||
Partial evidence “INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 857 contacts → | ||||
Partial evidence “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 848 contacts → | ||||
Partial evidence “We love our customers and are committed to providing Better Automation and Controls Solutions, Products, Engineering, Services and Support to them.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 819 contacts → | ||||
Indirect evidence “McNaughton-McKay is exceeding customer expectations during every interaction and transaction.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 751 contacts → | ||||
Indirect evidence “Your Possibility.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 688 contacts → | ||||
Indirect evidence “Puffer‑Sweiven has supported process operations for over 80 years-helping facilities run safer, smarter, and more reliably.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: automation and instrumentation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names automation and instrumentation companies.
- Partial evidence
- Its own public description names part of automation and instrumentation companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name automation and instrumentation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 3,182 automation and instrumentation companies based in the United States
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Automation and instrumentation companies based in the United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,182 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among automation and instrumentation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “automation and instrumentation companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names automation and instrumentation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among automation and instrumentation companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 75,647 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Automation and instrumentation companies by metro
- Automation and instrumentation companies in Houston121
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names automation and instrumentation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many automation and instrumentation companies are there based in the United States?
RevenueBase identified 3,182 automation and instrumentation companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Emerson, headquartered in St Louis, tops this list with the largest team on record.
Which city has the most automation and instrumentation companies?
Houston leads with 121 headquartered companies, followed by Cincinnati (23) and Miami (21).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 75,647 verified decision-maker contacts tracked across these 3,182 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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