When There’s Nowhere Else to Turn,
Our Private Eyes Can Help

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Infidelity Investigations

Is your loved one cheating?
Discuss your circumstances with
an expert infidelity detective

Learn More

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Surveillance

We specialize in electronic
surveillance to obtain results
needed to win your case

Learn More

Locate A Missing Person

Find a Lost Loved One.
Don’t leave it up to online
database searches to get results

Learn More

North American Private Investigators

We are a licensed and bonded private investigator firm that has been conducting professional investigations and surveillance worldwide for over 45 years. We have the private detectives, resources, and knowledge you need for any one of our personalized services. NAI has set the standard in the industry with our proven methods and results. Our private investigators have the credentials and expertise needed, having solved thousands of cases for our clients. We will gather the evidence needed to solve your case. With thousands of satisfied clients, we are the private eyes to count on for help.

Read Our Private Investigation Reviews

Why We Are Better

North American Investigations has the best private investigators in New York City, America, and around the world. Being one of the oldest and largest firms in the nation, we have been conducting investigations and solving cases for over 45 years across the United States.  We have locations on Long Island, in New York City, in New Jersey, in Connecticut, and in Los Angeles and others stationed internationally.

Find Out Why We're Better

CLIENT TESTIMONIALS


Free Consultation!

Call (800) 724-8080

When There’s Nowhere Else to Turn,

Our Private Eyes Can Help


Free Consultation!

Call (800) 724-8080 or fill out the form

When There’s Nowhere Else to Turn,

Our Private Eyes Can Help


Free Consultation!

Call (800) 724-8080 or fill out the form

Read our private investigation reviews

North American Private Investigators

We are a licensed and bonded private investigator firm that has been conducting professional investigations and surveillance worldwide for over 45 years. We have the private detectives, resources, and knowledge you need for any one of our personalized services.  NAI has set the standard in the industry with our proven methods and results. Our private investigators have the credentials and expertise needed, having solved thousands of cases for our clients. We will gather the evidence needed to solve your case. With thousands of satisfied clients, we are the private eyes to count on for help.

Who We Help

Individuals

When Your Search Ends, Ours Begins

Businesses

Large or Small, We Can Help

Attorneys

Helping Firms & Private Practices

Investigators

Helping Others is Part of the Job

rings

Infidelity Investigations

Is your loved one cheating?
Discuss your circumstances with
an expert infidelity detective

Learn More About Infidelity Services

camera77

Surveillance

We specialize in electronic
surveillance to obtain results
needed to win your case

Learn More About Surveillance

Locate A Missing Person

Find a Lost Loved One.
Don’t leave it up to online
database searches to get results

Learn More About Missing Persons

Surveillance Private Investigator

Why We Are Better

North American Investigations has the best private investigators in New York City, America, and around the world. Being one of the oldest and largest firms in the nation, we have been conducting investigations and solving cases for over 45 years across the United States.  We have locations on Long Island, in New York City, in New Jersey, in Connecticut, and in Los Angeles and others stationed internationally.

Find Out Why We're Better

Featured in the Following Media

North American Investigations New York Times
North American Investigations Featured in Vice Magazine
North American Investigations in the Wall Street Journal
Darrin Giglio Featured in the Liberation

CLIENT TESTIMONIALS