The Law Office Of William J. O'Neil


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Top 100 Lawyers

37+ Years Experience

Payment Plans Available

Top 100 Lawyers

35+ Years Experience

Payment Plans Available

East Longmeadow, Massachusetts

Criminal Law, DUI/OUI Defense, Bankruptcy Law & Foreclosure Defense Law Firm

William O'Neil has practiced law in the greater Springfield area for over 35 years. He concentrates in criminal defense of major crimes. Attorney O'Neil provides the highest quality counsel on all felonies and misdemeanors to clients who are charged in State and Federal Courts. He has also defended hard working citizens who have been harassed by debt collectors by defending them in court against those creditors and in filing for bankruptcy protection. Receiving compassionate legal advice from our experienced professionals will prevent you from getting lost in the corporate shuffle.


Attorney William O'Neil's office is conveniently located in East Longmeadow and offers plenty of free parking.

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Proven Track Record Of Success

Stanley Slonka

Mr. Slonka was convicted armed assault with intent to murder in Springfield.

Not Guilty

Charles Wilhite

Convicted of murder for hire of an individual outside of a storefront in Springfield.

Not Guilty

Eduardo Martinez Colon

Charged with murdering his wife's boyfriend after finding him and the wife in their bedroom.

Not Guilty

Client Reviews


Attorney Headshot

William J. O'Neil

Attorney At Law

Member of the National Trial Lawyers

Bill O'Neil is a Member of the National Trial Lawyers


The National Trial Lawyers is a professional organization composed of the premier trial lawyers from across the country who exemplify superior qualifications as civil plaintiff or criminal defense trial lawyers. This national organization provides networking opportunities, advocacy training, and the highest quality educational programs for trial lawyers.

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