Company lists · Data refreshed November 2026

Top 25 Operations and maintenance contractors worldwide

Name: Operations and maintenance contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 8,668 companies tracked

RevenueBase identified 8,668 company matches for operations and maintenance contractors worldwide as of November 2026 and tracks 279,829 professional contacts across them, including 41,441 with verified work emails. The United States is the largest market and Dubai the largest hub.

This list covers company matches for operations and maintenance contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for operations and maintenance contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

8,668Companies

279,829Contacts tracked

41,441Verified emails

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The 25 largest operations and maintenance contractors worldwide

Ranked by team size

Top 25 of 8,668 company matches for operations and maintenance contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Manserv	Exact match	São Caetano Do Sul, BrazilHQ recorded Nov 6, 2026	10001+	17,093 contacts →
	Exact match “A Manserv tem no ato de servir sua principal vocação.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	MITIE	Exact match	London, United KingdomHQ recorded Nov 6, 2026	10001+	15,296 contacts →
	Exact match “Founded in 1987, Mitie is the UK’s leading facilities management and professional services company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Programmed	Exact match	Docklands, AustraliaHQ recorded Nov 6, 2026	10001+	4,751 contacts →
	Exact match “We are a leading provider of staffing, maintenance and facility management services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	STORK	Exact match	Utrecht, NetherlandsHQ recorded Nov 6, 2026	10001+	4,163 contacts →
	Exact match “Stork is a global provider of integrated operations, maintenance, modification and asset integrity solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	C&w Services	Exact match	Needham, MA, United StatesHQ recorded Nov 6, 2026	10001+	3,531 contacts →
	Exact match “Raising the Value of Facilities Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Farnek Services LLC	Exact match	Dubai, United Arab EmiratesHQ recorded Nov 6, 2026	5,001-10,000	3,363 contacts →
	Exact match “We provide total sustainable facilities management services to a variety of industries and businesses across the UAE.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	ISS Facility Services España	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	10001+	2,938 contacts →
	Exact match “ISS Iberia se centra en crear espacio para que personas y organizaciones prosperen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Seder Group	Exact match	Al Malqa, Saudi ArabiaHQ recorded Nov 6, 2026	10001+	2,920 contacts →
	Exact match “مجموعة سدر للتجارة والمقاولات هي شركة مختصة ورائدة في تقديم حلول إدارة المرافق المتكاملة وخدمات التشغيل والصيانة بمختلف المجالات وبخبرة تمتد إلى أكثر من ٤٦ عامًا مساهمةً في خلق…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Servest SA	Exact match	Johannesburg, South AfricaHQ recorded Nov 6, 2026	10001+	2,846 contacts →
	Exact match “Enhancing Facilities Ecosystems At Servest, we see facilities as living ecosystems – dynamic environments that support people, drive business efficiency and create value over time.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Khidmah	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Nov 6, 2026	1,001-5,000	2,570 contacts →
	Exact match “Our facility management solutions are designed to offer the perfect mix of services for your facility and budget.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	GCA Services Group	Exact match	NY, United StatesHQ recorded Nov 6, 2026	10001+	2,546 contacts →
	Exact match “ABM (NYSE: ABM) is a Fortune 500 company and leading provider of facility solutions with offices throughout the United States and various international locations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Advanced Technology Services ATS	Exact match	Peoria, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,329 contacts →
	Exact match “Advanced Technology Services, Inc.(ATS) is a single source for industrial maintenance, technology and parts, offering a complete solution for support, training, monitoring and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Fm2c	Exact match	Campinas, BrazilHQ recorded Nov 6, 2026	5,001-10,000	2,264 contacts →
	Exact match “A FM2C destaca-se no cenário empresarial brasileiro como uma força inovadora no setor de Serviços Industriais, Facilities e Volantes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Zahran Facilities Management	Exact match	Riyadh, Saudi ArabiaHQ recorded Nov 6, 2026	10001+	2,045 contacts →
	Exact match “Zahran FM is the largest and most accomplished FM company in the Kingdom of Saudi Arabia, founded on a reputation for service excellence that spans more than 40 years, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	ELFE	Exact match	Macaé, BrazilHQ recorded Nov 6, 2026	1,001-5,000	2,045 contacts →
	Exact match “No mercado há mais de duas décadas, a Axia é uma empresa nacional com atuação em operação e manutenção industrial.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	NAES	Exact match	Issaquah, DE, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,037 contacts →
	Exact match “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Dietsmann	Exact match	Fontvieille, MonacoHQ recorded Nov 6, 2026	5,001-10,000	2,035 contacts →
	Exact match “Dietsmann is the leading independent specialist in Operation & Maintenance services for continuous-production plant in the oil & gas and power industries with over 40 years of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Coopservice	Exact match	Reggio Emilia, ItalyHQ recorded Nov 6, 2026	10001+	1,985 contacts →
	Exact match “Il nostro Purpose: “Abbiamo a cuore e valorizziamo i vostri mondi” Ogni attività umana ha bisogno di luoghi per compiersi: abitazioni, uffici, industrie, centri commerciali…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	IMC Saste Construções, Serviços E Comércio Ltda	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,846 contacts →
	Exact match “A IMC Saste, empresa fundada em 1992, tem atuação de abrangência nacional e unidades de negócio especializadas nas áreas de Facilities, Construção e Montagem, Manutenção…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Bilfinger North America	Exact match	The Woodlands, LA, United StatesHQ recorded Nov 6, 2026	10001+	1,468 contacts →
	Exact match “As a leading construction and maintenance provider, Bilfinger aims to enhance the efficiency of assets and lower operational costs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Aramark Facilities Management	Exact match	Philadelphia, PA, United StatesHQ recorded Nov 6, 2026	10001+	1,307 contacts →
	Exact match “At Aramark Facilities Management, we’re raising the bar on facilities management.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	CNS Nacional DE Serviços	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 6, 2026	5,001-10,000	1,272 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Diversified Maintenance	Exact match	Tampa, FL, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,269 contacts →
	Exact match “Diversified Maintenance goes above and beyond to make sure our operational excellence and specialized cleaning and maintenance services help businesses run smoothly and seamlessly.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Rekeep	Exact match	Zola Predosa, ItalyHQ recorded Nov 6, 2026	10001+	1,244 contacts →
	Exact match “Il Gruppo Rekeep è il principale operatore italiano e tra i principali player internazionali nell’Integrated Facility Management ovvero la gestione e l’erogazione di servizi…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Strike	Exact match	Spring, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,228 contacts →
	Exact match “Strike safely and reliably delivers the specialized asset maintenance, construction, and contracting services that are business-critical to the energy, chemical, manufacturing…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “operations and maintenance contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 8,668 operations and maintenance contractors worldwide

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Operations and maintenance contractors worldwide at a glance

As of Nov 6, 2026

14.8%Verified-email coverage

32.3Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Dubai

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,834

11-50

2,714

51-200

1,518

201-500

631

501-1,000

309

1,001-5,000

356

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for operations and maintenance contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “operations and maintenance contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 41,441 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Operations and maintenance contractors by location

42 lists · largest first

Every Operations and maintenance contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “operations and maintenance contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operations and maintenance contractors are there worldwide?

RevenueBase identified 8,668 company matches for operations and maintenance contractors worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Manserv tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most operations and maintenance contractors?

The United States leads with 1,471 companies, followed by the United Kingdom (737) and Brazil (650). Every operations and maintenance contractors list by country and city is linked on this page.

Which city has the most operations and maintenance contractors?

Dubai leads with 163 company records, followed by London (132) and Sao Paulo (108).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 41,441 professional contacts with verified work emails tracked across these 8,668 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.