2026 Ranking

Best Security Companies in Baltimore

Ranking of the best private security companies in Baltimore, Maryland. The order prioritizes verified state licensing, track record and verified reviews; profile views and recommendations only fine-tune the order.

Verified state license Real user views 97 companies in Baltimore

We're still gathering recommendations and verified customer reviews in Baltimore. In the meantime, the order is based on license status and profile views.

Top-ranked companies in Baltimore

1
AC
A C ROMAN AND ASSOCIATES, INC.
State Licensed
Baltimore
Private Investigation
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Licensed
2
AA
A-CHECK AMERICA, INC. DBA A-CHECK GLOBAL
State Licensed
Baltimore
Private Investigation
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Licensed
3
AL
AABO, LLC
State Licensed
Baltimore
Security GuardsEvent SecurityResidential & HOA Security+8
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Licensed
4
AT
ADVANCED TECHNOLOGY INVESTIGATIONS, INC
State Licensed
Baltimore
Private Investigation
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Licensed
5
AR
ADVANCING REAL CHANGE INC.
State Licensed
Baltimore
Private Investigation
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Licensed
6
AP
AHTNA PROFESSIONAL SERVICES INC.
State Licensed
Baltimore
Security GuardsEvent SecurityResidential & HOA Security+7
Get quotes in Baltimore
Licensed
7
AC
AIC COMPANIES LLC
State Licensed
Baltimore
Private Investigation
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Licensed
8
AI
ALLEN INVESTIGATIVE SERVICE LLC
State Licensed
Baltimore
Private Investigation
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Licensed
9
AU
ALLIED UNIVERSAL ENHANCED PROTECTION SERVICES
State Licensed
Baltimore
Security GuardsExecutive ProtectionEvent Security+8
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Licensed
10
AU
ALLIED UNIVERSAL EVENT SERVICES A/K/A STAFF PRO INC.
State Licensed
Baltimore
Security GuardsEvent SecurityResidential & HOA Security+7
Get quotes in Baltimore
Licensed

All state licensed security companies in Baltimore

97 companies with a verified, active state license, ranked by track record and reputation. All checked against official license records.

See the remaining 47 licensed companies in the directory

Ranking methodology

The order reflects real, verifiable signals that are hard to manipulate. Companies with a verified state license appear first; within that group we prioritize the best-reviewed (verified reviews) and the most established according to official records. Profile views and community recommendations only fine-tune the order — a couple of votes can't move positions. For each company we show exactly which signals back its position.

State license — we verify each active license against state licensing boards like California BSIS and Illinois IDFPR. Licensed companies appear first.
Real profile views — how many people viewed the company's profile over the last 30 days.
Community recommendations — user votes with anti-fraud controls (fingerprint dedup).
Verified customer reviews — customer rating and review volume, when available.

Looking for more options in Baltimore?

Browse the complete directory with all 97 private security companies listed in Baltimore, filter by service type and compare pricing.

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Security services in Baltimore

Security Guards en Baltimore Armed Security Guards en Baltimore Mobile Patrol en Baltimore Event Security en Baltimore Fire Watch Services en Baltimore Executive Protection en Baltimore K9 Security en Baltimore Loss Prevention & Retail Security en Baltimore Corporate Security en Baltimore Warehouse & Industrial Security en Baltimore Residential & HOA Security en Baltimore Construction Site Security en Baltimore Alarm Monitoring en Baltimore Video Surveillance & CCTV en Baltimore Access Control en Baltimore Private Investigation en Baltimore Armored Transport & Cash-in-Transit en Baltimore Security Consulting en Baltimore

More about private security in Baltimore

Directory of BaltimoreAll security companies, with search and pagination.State Licensed in BaltimoreOnly companies with an active state license.

See all security companies in Maryland

Frequently asked questions

What are the best private security companies in Baltimore?

Top companies in Baltimore include A C ROMAN AND ASSOCIATES, INC., A-CHECK AMERICA, INC. DBA A-CHECK GLOBAL, AABO, LLC, ADVANCED TECHNOLOGY INVESTIGATIONS, INC, ADVANCING REAL CHANGE INC., based on their active state license and the volume of profile views and community recommendations on HireSecurityNow.com. The order updates continuously based on these signals.

How is the ranking of security companies in Baltimore determined?

Companies with a verified, active state license appear first, checked against official licensing board records like California BSIS and Illinois IDFPR. Within that group, the order reflects real profile views over the last 30 days, community recommendations (with anti-fraud controls) and verified customer reviews when available.

Are the ranked companies state licensed?

We verify each company's license status against official state licensing board records. Each company's profile shows its license number and status when it holds an active license.

How do I hire one of these companies in Baltimore?

You can get free quotes from any company in the ranking: open its profile, submit a quote request with your requirements and you'll receive proposals directly. All quotes are free and come with no obligation.

How many security companies are listed in Baltimore?

Our directory lists 97 companies in Baltimore, Maryland. You can browse the complete list in the Baltimore security companies directory.

Best Security Companies in Baltimore

Top-ranked companies in Baltimore

A C ROMAN AND ASSOCIATES, INC.

A-CHECK AMERICA, INC. DBA A-CHECK GLOBAL

AABO, LLC

ADVANCED TECHNOLOGY INVESTIGATIONS, INC

ADVANCING REAL CHANGE INC.

AHTNA PROFESSIONAL SERVICES INC.

AIC COMPANIES LLC

ALLEN INVESTIGATIVE SERVICE LLC

ALLIED UNIVERSAL ENHANCED PROTECTION SERVICES

ALLIED UNIVERSAL EVENT SERVICES A/K/A STAFF PRO INC.