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Lawrence Ryan Investigations, Inc.

(312) 647-2017
Lawrence Ryan Investigations, Inc.


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Welcome to Lawrence Ryan Investigations. As a private investigator in Chicago, Illinois, we bring over 38 years of law enforcement and investigations experience to bear on one goal: discovering the truth for our clients, whether that be catching your cheating spouse, winning a custody battle or divorce, or busting a stealing employee.

We are widely recognized as not only the most effective private investigations services in the Chicago area, but also the most discrete and confidential. Your privacy and protection is our number one concern. Why do we go to such great lengths to be the most confidential private investigators in Chicago? In addition to insuring your anonymity and safety, it is also critical to a successful investigation.

Our goal while you are here is to provide you with the information you need to make the best decision possible. When you are ready, give us a call for a confidential assessment. After we understand your needs and are confident we can help you, we’ll explain exactly how we can help and the costs involved. We are here and ready to help twenty-four hours a day.

Lawrence Ryan, owner, began a law enforcement career in 1976. Mr. Ryan received his Bachelor degree in Criminal Justice from Lewis University of Lockport, Illinois in 1977 & his Masters degree in Corrections from Chicago State University in 1980. Lawrence Ryan Investigations was established in 1995 under Mr. Ryan's state of Illinois Private Detective License. This company will be a strong advocate of your legal services. The services provided will be conducted in a professional & confidential manner.


  • Asset Search
  • Background Checks
  • Bug Sweep / TSCM
  • Child Support / Custody
  • Computer Forensics / Crime
  • Domestic
  • Due Diligence
  • Executive Protection
  • Forensic
  • Fraud
  • Infidelity / Cheating Spouse
  • Insurance
  • Judgment Recovery
  • Missing Persons
  • Process Service
  • Public Records
  • People Locate / Skip Trace
  • Social Media
  • Surveillance
  • Workers Compensation

Service Guarantee

All investigations performed with discretion.

Areas of Coverage

  • State of Illinois
  • Cook County:
  • Chicago
  • Evanston
  • Northlake
  • Oak Forest
  • Palos Hills
  • Prospect Heights
  • Du Page County:
  • Aurora
  • Darien
  • Elmhurst
  • Naperville
  • St. Charles
  • Wheaton
  • Kane County:
  • Batavia
  • Elgin
  • Geneva
  • McHenry County:
  • Crystal Lake
  • Harvard
  • Marengo
  • McHenry
  • Woodstock
  • Will County:
  • Braidwood
  • Cresthill
  • Lockport
  • Wilmington
  • Kendall County:
  • Joliet
  • Plano
  • Sandwich
  • Yorkville
  • Lake County:
  • Highland Park
  • Highwood
  • Lake Forest
  • Park City
  • Waukegan
  • Concentration of Services rendered in the City of Chicago, County of Cook & the collar counties.


  • Illinois Police Association
  • Faternal Order of Police, Lodge #7
  • ServeNow
  • PInow

Contact Info

Larry Ryan
(312) 647-2017
9624 South Cicero Avenue
Oak Lawn, IL 60453
117.001716 & 115.001180

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Office Location

9624 South Cicero Avenue
Oak Lawn, IL
(312) 647-2017