Best Private
Investigators in
New York

18 Best New York City Private Investigators

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We scored 2,017 Private Investigators in New York, NY and Picked the Top 18

Cornelius Investigations LLC is a licensed, bonded, and insured investigations agency in New York City that conducts private investigations for many of New York City’s top law and corporate firms, as well as for individuals. The agency’s investigations team, including the founder Scott Prendergast, were formerly with the New York Police Department (NYPD) or New Jersey State Police. Services offered include private investigations, surveillance, computer forensics, executive protection, and event security. The agency also helps attorneys investigate business and insurance cases, family law issues, and background checks.


AAA Investigations & Consulting, Inc. is a licensed and bonded private investigation company in New York, New York that offers quality investigative services and consultations at unbeatable prices. They have a range of specialties, which include criminal cases, cheating spouses, corporate investigations, and business practices. AAA Investigations & Consulting, Inc. also provides attorney referral services and in-house legal counseling.

Ace Investigations & Protection Inc. is a private investigation agency in Manhattan, NY that offers quality yet affordable service to New York City and Long Island. They specialize in locating people and providing investigative services as well as infidelity investigations. Ace Investigations & Protection Inc. has experienced investigators who ensure professional and confidential service.

Affiliated Investigations Corp. is a licensed and insured company in Queens Village, New York that has been providing investigation and security services for more than 33 years. Their services range from background investigations and evidence gathering to commercial security and executive protection. Affiliated Investigations Corp. is also associated with The Ohio Department of Public Safety and New York State Department of State and has earned an A+ rating with the Better Business Bureau.

American Eagle Investigations is an investigative company in New York City that has been serving individuals and businesses for 20 years. The company offers domestic and civil investigations, background checks, insurance fraud investigations, and attorney services. American Eagle Investigations is also associated with American Society for Industrial Security, The American Polygraph Association, and the National Association of Investigative Specialists.

Beau Dietl & Associates is a leading private investigation firm based out of New York City that provides fast, discreet and reliable service using the latest information-gathering and security technology. They specialize in investigations and intelligence, insurance, and security. The firm offers a very broad array of services that range from asset recovery to executive protection to polygraph tests. The agency's founder and CEO, Bo Dietl, is a well-known security and investigation expert with many high-profile endorsements and media appearances.

CPI Investigations is a private investigation firm in Manhattan, New York that provides services in all 50 states as well as to other parts of the globe. The firm specializes in polygraph/lie detection tests, personal and corporate protection, surveillance, background checks, and electronic eavesdropping protection, as well as litigation support and case assistance. CPI Investigations is proud to be affiliated with the American Association of Police Polygraphists, American Polygraph Association, and The PI Group, among other organizations.

DVM Investigations and Services LLC is a licensed, bonded and insured private investigation company in Staten Island, New York that offers confidential and discreet services to clients in New York and New Jersey. This full-service company specializes in background investigations, employment screening, surveillance, and security consultant services. DVM Investigations and Services LLC is also affiliated with ASIS International, Associated Licensed Detectives of NYS, ALDONYS, and other organizations.

Investigative Solutions LLC is a Manhattan-based private investigation agency that serves the New York and New Jersey area. This full-service agency offers services such as surveillance, background checks, GPS tracking, and computer forensics, among others. Investigative Solutions LLC is also associated with Society of Former Special Agents of the Federal Bureau of Investigation, NCISS, NJLPIA, and Certified Fraud Examiner (CFE).

Investigreat LLC is a firm of private investigators based in the Jamaica area of Queens, New York City. Founded in 2013, it serves clients throughout NYC, Long Island, and Connecticut. The firm is fully licensed, insured and bonded, handling cases for clients who suspect their partner is being unfaithful, or their spouse has failed to pay child support, or in pursuit of missing persons for worried family members. Investigreat LLC provides a 24/7 service for all clients.

J.T. Mullen Private Investigator is a firm in Manhattan, New York that has been providing comprehensive and innovative investigative services for more than 40 years. They specialize in corporate financial investigations, protective services, asset searches, and custody challenges. J.T. Mullen Private Investigator has acquired impressive testimonials and recognition from Crain’s, the New York Post, New York Law Journal, among other outlets.

Long Island Investigations is an investigative and detective agency that has been serving Nassau and Suffolk counties for more than 30 years. Long Island Investigations’ investigators are all former NYPD detectives who are highly skilled, qualified and focused on getting the job done right. The agency specializes in surveillance, matrimonial, pre-marital investigations, private and personal security, and child custody.

Manhattan Investigations, LLC is an agency in New York City that has been providing investigative services since 2004. They specialize in infidelity investigations, and child support and child welfare investigations, as well as technical and forensic investigations. Manhattan Investigations’ highly qualified investigators are equipped with more than 20 years of investigative experience, and the agency is confident in their abilities, offering clients a money-back 100% satisfaction guarantee.

National Investigations Inc. is private investigation company in Manhattan, NY that aims to provide professional and confidential service to each client. They specialize in private client and attorney services, corporate investigations, and matrimonial infidelity. Clients speak highly about National Investigations Inc.’s very experienced private investigators and expert, discreet service.

New York Investigation Specialists, LLC is a company in Brooklyn, NY that has been providing 100% confidential investigative services for more than 15 years. Their private investigators specialize in surveillance and investigations which include tenant and pre-employment screening as well as criminal history checks. New York Investigation Specialists, LLC's team brings experience, skill, and a comprehensive background that serves each client's needs.

RQ Investigations is a leading private investigation firm in New York City that offers quality service at affordable rates. This professional and multi-lingual firm specializes in background investigations, criminal defense investigations, surveillance, and school district services. RQ Investigations is fully licensed and insured and employs highly trained investigators who use cutting-edge technologies to achieve satisfactory results.

Worldwide Intelligence Network is a team of private investigators that operates throughout the five boroughs and Los Angeles. The detectives provide infidelity investigations, surveillance, and executive background investigations. The investigators also look into matters of employee misconduct and cases of workers' compensation fraud. Worldwide Intelligence Network has been ranked among the best five private investigation companies in the United States by publishers of The New Yorker, Vanity Fair, and Vogue.

Your I s Consulting Inc. has been providing investigative services at competitive prices to clients in New York City, Long Island and Westchester for more than 20 years. Their areas of specialty consist of matrimonial and infidelity investigations, surveillance, litigation support, and child custody. Your I s Consulting Inc. uses state-of-the-art equipment and only employs skilled investigators with 15 years of minimum experience.

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