Best Private Investigators near Dundalk, MD

These agencies serve Dundalk from nearby bases in towns including Baltimore, Towson and Pasadena.

15 agencies listed · 6 open 24/7 · 10 open weekends · 13 rated 4.5+ · 4 show a license

Data verified October 16, 2026

East Coast Investigations

East Coast Investigations

4.7 34 reviews
“They are thorough and have a quick turnaround time with reports and information.”
Serves MarylandSince 2008
Glen Burnie, MD · 10 mi from Dundalk
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Castle Security Group

Castle Security Group

4.9 17 reviews
“I got my car back and owe that largely to Paul's wonderful guidance.”
Maryland license #22PLU-SGPD3277Serves Maryland, United StatesOpen 24 hoursSince 2016
Baltimore, MD · 7 mi from Dundalk
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Metropolitan Police Protection/Security Services

Metropolitan Police Protection/Security Services

5.0 14 reviews
“I was concerned that the security presence may intimidate some of the patrons but their staff was very personable, and made patrons feel protected yet relaxed at the same time.”
Serves Virginia, Washington, D.C.Since 2020
Linthicum Heights, MD · 11 mi from Dundalk
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Constable Court Services

Constable Court Services

5.0 3 reviews
“I would definitely recommend Constable Court Services and I look forward to working with the services again as needed.”
Since 2014
Baltimore, MD · 7 mi from Dundalk
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Eyes On Investigations

Eyes On Investigations

5.0 2 reviews
“Helped me uncover a major element of my case.”
LicensedOpen 24 hours30+ years
Severna Park, MD · 14 mi from Dundalk
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Mwr Investigations

Mwr Investigations

4.1 3 reviews
Free phone consultationServes Maryland, VirginiaSince 2014
Towson, MD · 11 mi from Dundalk
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The 15 agencies on this page are the private investigators listed for Dundalk, MD. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.

Area overview: Dundalk, MD

14 of the 15 agencies on this page have a rating, from 4.1 to 5.0 across 136 reviews; 13 are rated 4.5 or higher. 6 are open around the clock; 10 are open on Saturdays and 7 on Sundays. 4 show a license on their websites. Domain records put 7 websites of the agencies on this page at ten or more years old; the oldest dates from 2008. 6 offer urgent consultations and 1 lists coupons or special offers. We have a website on file for 12 of the agencies on this page; 9 publish a contact page and 8 list a public email. We count these figures across the agencies on this page; hours and prices change, so confirm the details with the agency before you book.

Which investigators listed for Dundalk describe their work online?

12 of the 15 agencies on this page have a website on file. Those pages are where an agency states its license, the kinds of investigation it takes on, and whether it works mainly for attorneys, for companies or for private clients. That last point changes how a report gets written.

Prominent Defense Agency

Prominent Defense Agency

5.0 15 reviews
“Everything about this organization was professional and friendly, very informative of gun laws.”
Since 2018Virtual consultations
Nottingham, MD · 10 mi from Dundalk
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Police Protection Service

Police Protection Service

5.0 2 reviews
“It is very refreshing to see a company have the professionalism to gauge each situation and problem for the customer to have the outcome that they are looking for for the security needs.”
LicensedOpen 24 hoursSince 2018Prices online
Pasadena, MD · 8 mi from Dundalk
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Book onlineBook
The Bowden Group & Associates

The Bowden Group & Associates

5.0 2 reviews
“This agency is incredible and I'll recommend them to all my family & friends.”
Since 2015
10 mi from Dundalk
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Protection Security Associates

Protection Security Associates

4.7 11 reviews
“A is a top notch armed security provider, very professional, very knowledgeable with a well trained staff!!”
Open 24 hours
9 mi from Dundalk
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Proof Investigations

Proof Investigations

5.0 1 review
LicensedOpen 24 hoursSince 2022
7 mi from Dundalk
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Investigative Services of M D

Investigative Services of M D

Open 24 hoursSince 2016
Baltimore, MD · 7 mi from Dundalk
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Excel Associates

Excel Associates

5.0 3 reviews
“They are always willing to go above and beyond on behalf of my firm and clients.”
Since 2005
Parkville, MD · 9 mi from Dundalk
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Alpha Elite Security & Private Investigations

Alpha Elite Security & Private Investigations

5.0 1 review
“He worked every angle of the case diligently and stayed in constant contact with me through out the investigation.”
Towson, MD · 11 mi from Dundalk
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World Wide Investigation

World Wide Investigation

Since 2014
Baltimore, MD · 7 mi from Dundalk
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Why these companies made our list

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