Company lists · Data refreshed September 2026
Top 25 Security companies based in Ireland
This directory lists 202 security companies based in Ireland, with 9,559 contacts and 1,401 email addresses for business research and outreach. As of September 2026, Dublin is the single most-represented city among the companies on the list.
Security companies provide services, systems, or products that protect people, property, facilities, data, networks, or other assets from security threats. This list covers companies that provide security products or services, including physical security, cybersecurity, monitoring, access control, risk management, and related protection solutions. Ranked by team size, largest first. Data current as of September 6, 2026.
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.
The 25 largest security companies based in Ireland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,384 | ||||
“Tyco offers comprehensive security solutions to protect people, facilities, and assets as part of Johnson Controls world leading portfolio of building products, technologies…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 400 | ||||
“Established in 1993 Synergy Security Solutions, is now one of the largest security service providers in Ireland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 371 | ||||
“As the world’s leading intelligent security services provider, we proudly stand guard to protect what really matters – the safety and welfare of people and property everywhere.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | PhonewatchIndirect evidence | 287 | |||
“PhoneWatch are Ireland's No.1 monitored alarm provider, with over customers nationwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 213 | ||||
“4-Time OSPA Winners (Outstanding Contract Security Company) 2022 - 2025 Manguard Plus is a privately owned, Irish Security company focused exclusively on the provision of Manned…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 167 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 124 | ||||
“SAR Group is one of Ireland’s largest service providers offering our customers innovative, flexible and cost-effective solutions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | FortusStrong evidence | 122 | |||
“We are Fortus and we are a distributor of security solutions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | RFC Security GroupStrong evidence | 121 | |||
“Security solutions” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Septimius SecurityStrong evidence | 100 | |||
“Septimius Security stands alone as your global security partner offering: Global Presence, Local Expertise: Septimius Security is a global private security firm, combining…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 96 | ||||
“Pro Security was set up in 2015, since then we have grown our customer base to over throughout Ireland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 84 | ||||
“Electro Automation is regarded as one of Ireland's premier access controlled solutions provider.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 79 | ||||
“The only security system to have ISO37001 - anti bribery and corruption and the first to obtain ISO27001 - cyber security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Reconnaissance GroupIndirect evidence | 73 | |||
“Reconnaissance Group - We leave nothing to chance.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | TOP Security GroupStrong evidence | 67 | |||
“From modest beginnings in 1979 Top Security has grown to become one of Ireland’s leading providers of security services and products.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 | ||||
“Acre brands, united!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 53 | ||||
“Provider of high end security services to the private & public sectors offering services in the following.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 40 | ||||
“At Action24 we have been delivering intelligent security solutions for over 40 years.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 40 | ||||
“Pioneer Fire & Security is run by professionals with a strong pedigree in the Irish life safety & security industry.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Integrity SecurityStrong evidence | 39 | |||
“Professional security in Ireland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Frontline Security Group IrelandStrong evidence | 37 | |||
“Frontline Security's underlying philosophy is to provide cost-effective and innovative security solutions for our clients.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Network SecurityStrong evidence | 36 | |||
“At Network Security our aim is to install and maintain high quality specialist Monitored security systems meeting the needs of both the commercial and domestic markets.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | GGL SecurityStrong evidence | 32 | |||
“GGL Security, founded in 1994, is an international security company.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 | ||||
“Homesecure is Ireland's fastest growing house alarm and security company with fully qualified engineers offering 24 hour monitored security systems, 365 days a year.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 19 | ||||
“RE:SURE is part of the Fortus Group, the UK and Ireland's largest privately held CCTV and alarm distribution company.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 202 security companies based in Ireland
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Security companies based in Ireland at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
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 security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Ireland whose own description of what they do matches “security companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security companies, and records with no verified work email. Companies headquartered outside Ireland 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 an evidence 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, 1,401 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 6, 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.
Security companies by metro
- Security companies in Dublin34
Frequently asked
How many security companies are based in Ireland?
RevenueBase counts 202 security companies based in Ireland on this list.
How many contacts and email addresses are available for security companies?
The list includes 9,559 contacts and 1,401 email addresses for security companies.
Which city has the most security companies on the list?
Dublin is the single most-represented city among the companies on the list.
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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.