William G. McGuinn




William G. McGuinn joined the firm in 2012 and is a partner in Hoagland Longo’s Construction Litigation, General Liability, and Criminal Defense Groups. He is admitted to the bar in New Jersey, New York, and the United States District County of New Jersey.

Bill received his B.A. from the University of Connecticut, his M.B.A from the Quinnipiac University School of Business, and his law degree from the Quinnipiac University School of Law in 2008. Bill then completed a one-year Superior Court Clerkship for the Honorable Phillip H. Mizzone, Jr., J.S.C., in the Criminal Division, Passaic County. In that position, Bill gained a wealth of knowledge and understanding of the criminal field, working closely with Judge Mizzone, advising him on a broad range of criminal issues including motions to sever, dismiss, suppress, research and draft legal opinions.

Prior to joining Hoagland Longo, Bill practiced at firm in Newark, litigating a broad range of insurance defense matters in both New Jersey and New York. Bill’s current practice at the firm includes premises liability, personal injury defense and related insurance coverage issues. He has gained significant experience representing security companies, nightclubs and bars in negligent security and assault/battery claims, as well as casinos, property owners, event promoters, concert venues and restaurants in personal injury claims, liquor liability claims, and dram shop litigation.

In addition to his insurance litigation experience, Bill dedicates a considerable amount of his practice to representing individuals accused of various crimes and offenses throughout New Jersey. Since 2009, Bill has handled all types of Municipal, Juvenile and Superior Court matters including drug offenses, assault charges, non-violent offenses, driving while intoxicated (DWI), expungment/sealing of records, driving with a suspended/revoked license, speeding tickets, other traffic related offenses and more.

Bill's extensive experience in direct and cross examination and has enabled him to serve as an adjunct professor for the Division of Criminal Justice Training Academy in Sea Girt, NJ. Through this academy, Bill has trained police officers, state troopers and Drug Recognition Experts (DRE) in cross-examination techniques used by defense attorneys, and how to deal with these techniques during pre-trial suppression motions, pre-trial hearings and trials.

Bill has been serving as the Aberdeen Township Municipal Prosecutor since 2015. As Township Prosecutor, Bill is responsible for trying and resolving criminal offenses such as drug charges, assault, theft, contempt and other disorderly person and petty disorderly person charges. He also handles the prosecution of motor vehicle infractions such as moving violations and DWI cases.

The American Institute of Criminal Law Attorneys (AIOCLA) has recognized Bill McGuinn for his exceptional performance as a New Jersey Criminal Law Attorney and listed him under the 10 Best Criminal Law Attorneys for Client Satisfaction in 2016. The AIOCLA is a third-party attorney rating organization for each state, and selects attorneys based on a rigorous selection process which includes client and/or peer nominations, thorough research and independent evaluation.

Bill is actively involved in his community, serving as a coach for the St. Clement’s Youth Basketball Association. He is also an active member of both the Boomer Esiason Foundation in the fight against Cystic Fibrosis and the Joe Girardi - Catch 25 Foundation, which provides support in the form of counseling, scholarships, financial aid and charitable donations to children dealing with the loss of a parent.


•10 Best Criminal Law Attorneys for Client Satisfaction, 2016, The American Institute of Criminal Law Attorneys
•2018, Rising Stars list by New Jersey Super Lawyers

Related News

•Hoagland, Longo, Moran, Dunst & Doukas LLP Opens Office in Red Bank, NJ
•William G. McGuinn Appointed to Municipal Prosecutor for the Borough of Red Bank
•Seventeen attorneys from Hoagland, Longo, Moran, Dunst & Doukas have been recognized as 2018 New Jersey Super Lawyers and Rising Stars.
•Hoagland Longo Announces New Partners.
•William G. McGuinn appointed to 4th term as Municipal Prosecutor for the Township of Aberdeen
•Hoagland Longo attorneys attend MCBF Hurricane Relief & Elijah's Promise Event
•William McGuinn Guest Lectures Police Officers on Trial Testimony
•William McGuinn recognized by the American Institute of Criminal Law Attorneys as 2016 10 Best Criminal Law Attorneys for Client Satisfaction.


•Hoagland Longo Attorneys to Attend CLM Northern New Jersey Chapter Networking Event (09.26.2018)
•Hoagland Longo Attorneys to Attend Red Bank RiverCenter Public Meeting (09.10.2018)

Blog Posts

•New Jersey Supreme Court: More than 20,000 DWI Convictions are Tainted
•Does a Criminal Guilty Plea in New Jersey Subject You to Civil Liability?
•N.J. Special Master Concludes 20,000 DWI Convictions Based on Unreliable Breath Tests
•Appealing NJ Municipal Court DWI Convictions May Stay Your License Suspension
•Sane Enough To Decide Whether You Are Insane?
•Thousands of New Jersey DWI Convictions Could Be Tainted - Is Yours One of Them?
•Sleeping it Off - Can You Be Convicted of DWI for Sleeping in Your Car?
•A Police Officer Must Give You the Opportunity to Produce Your Credentials


•Hon. Phillip H. Mizzone, J.S.C., Passaic County Superior Court, 2008-2009

Areas of Practice (7)

  • Construction Law
  • General Liability
  • Premises Liability
  • Liquor Liability
  • Indemnification & Coverage
  • Criminal Defense

Education & Credentials

Contact Information:
732-545-4717  Phone
732-545-4579  Fax
University Attended:
Quinnipiac University School of Business, M.B.A., 2008; University of Connecticut, B.A., 2005
Law School Attended:
Quinnipiac University School of Law, J.D., 2008
Year of First Admission:
2009, U.S. District Court, District of New Jersey; 2010, New York; 2009, New Jersey


•Member, Claims and Litigation Management Alliance ( CLM )
•Member, New Jersey State Bar Association
•Member, New Jersey State Municipal Prosecutors' Association
•St. Clement's Youth Basketball Association, Coach
•Boomer Esiason Foundation
•Joe Girardi - Catch 25 Foundation

Birth Information:
Payment Information:

    Peer Reviews

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    *Peer Reviews provided before April 15, 2008 are not displayed.

    Documents (2)

    Documents by this lawyer on Martindale.com



    New Brunswick, New Jersey

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