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Find the 31 Best Security Companies in Maryland

Browse 31 security companies serving Maryland, including Baltimore, Hagerstown and Gaithersburg, for home and commercial protection. Review guarding, patrol and security system services, read customer feedback and contact local providers for estimates.
Baltimore (4)
Bethesda (1)
Bladensburg (1)
Easton (1)
Frederick (1)
Gaithersburg (2)
Glen Burnie (1)
Hagerstown (3)
Hanover (1)
Kensington (1)
Lutherville-Timonium (1)
Phoenix (1)
Pikesville (1)
Preston (1)
Reisterstown (1)
Rockville (2)
Salisbury (1)
Silver Spring (2)
Thurmont (1)
Upper Marlboro (1)
Waldorf (1)
Westminster (1)
Windsor Mill (1)
Not rated yet
C & A Electric
49 Years
Not rated yet
45+ years of experience in electrical construction since 1977
C & A Electric provides expert electrical, fire alarm, and security solutions for residential, commercial, and government clients in the Washington D.C. metropolitan area since 1977.
Electrical Remodeling Fire Alarm Systems CCTV Installation
(301) 277-8370 Call Profile
Not rated yet
TCC Telecom
10 Years
Not rated yet
We offer 20+ years of combined experience in telecom and IT services.
TCC Telecom offers expert VoIP, cabling, and security solutions in Westminster, MD. Trusted for reliable service, certified technicians, and tailored business communication systems since 2016.
VoIP Installation Structured Cabling Security Surveillance
(443) 201-8074 Call Profile
Not rated yet
EAI Security Systems
27 Years
Emergency
Not rated yet
We are locally owned and operate with personal accountability for service quality
EAI Security Systems offers customized security solutions in Rockville, MD. Specializing in access control, surveillance, 24/7 monitoring, and fire safety systems for residential, commercial, and government clients across DC, Maryland, and Virginia.
Access Control Surveillance Systems 24/7 Monitoring
(301) 424-9588 Call Profile
Not rated yet
Atlantic Security Systems
45 Years
Emergency
Not rated yet
We have over 40 years of combined experience in the security industry
Atlantic Security Systems offers comprehensive security solutions in Hagerstown, MD, including intrusion detection, fire protection, video surveillance, and 24/7 monitoring services for residential and commercial clients.
Intrusion Detection Fire Protection Video Surveillance
(301) 797-0420 Call Profile
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Urban Alarm
Emergency
Not rated yet
We offer 24/7 monitoring starting at $22.95/month
Urban Alarm offers advanced security systems, 24/7 monitoring, and smart home automation for residential and commercial properties in the DC, MD, and VA areas.
Video Surveillance Access Control Home Automation
(877) 678-7226 Call Profile
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A&E Home Security
46 Years
Not rated yet
We offer 40+ years of specialized security industry experience since 1980
Discover top-quality alarm equipment and expert security solutions at A&E Home Security. Serving Silver Spring since 1980 with competitive pricing, free technical support, and nationwide shipping.
Security Systems Control Panels Motion Detectors
(301) 598-0615 Call Profile
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Datawatch Systems
45 Years
Emergency
Not rated yet
40 years of experience in access control and security systems.
Datawatch Systems offers advanced access control, emergency management, and security solutions for commercial real estate and enterprises nationwide.
Access Control Mobile Solutions Video Management
(800) 899-9872 Call Profile
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Marvelouz Teknology
Emergency
Not rated yet
18 years of experience in security camera installations
Trusted security camera installation in Baltimore with 18 years of experience. Marvelouz Teknology offers professional residential and commercial CCTV systems, 24/7 monitoring, and remote access solutions. Free quotes available.
Security Camera Installation Access Control Systems VOIP Installation
(410) 635-4696 Call Profile
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Shore Home Solutions
Not rated yet
We back all manufacturer warranties with free on-site repairs and replacements
Shore Home Solutions offers custom home theater, automation, and security systems in Maryland. Expert installation and exceptional customer service for residential and commercial properties.
Custom Home Theater Design Hidden Television Solutions Home Automation Systems
(410) 878-2448 Call Profile
Not rated yet
Central Maryland Security Systems
39 Years
Emergency
Not rated yet
Family-owned since 1987 with direct owner involvement
Trusted security solutions in Thurmont, MD. Custom systems, 24/7 monitoring, and personalized service since 1987.
Security Systems CCTV Central Vacuum
(240) 405-5144 Call Profile