3 Best Criminal Defence Lawyers in Peterborough, ON

Expert-recommended Top 3 Criminal Defence Lawyers in Peterborough, ON. All of our Criminal Lawyers actually undergo a rigorous 50-Point Inspection, which includes everything from checking reviews, ratings, reputation, history, complaints, satisfaction, trust and price - all to ensure overall excellence. You deserve only the best!

10+ YEARS ON TBR
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AITKEN ROBERTSON

263 Charlotte Street,
Peterborough, ON K9J 2V3 Directions

Since 1984

Specialty:

✓Domestic Assaults ✓Sex Assaults ✓Other Assaults and Threats ✓Internet Crimes ✓Bail Hearings ✓Drug Charges ✓Young Offenders ✓Shoplifting Charges ✓Fraud Charges ✓Mischief Charges ✓Criminal Appeals ✓Pardons ✓Peace Bonds ✓Theft Charges ✓Dangerous Driving ✓Traffic Charges ✓Drinking and Driving ✓Traffic Tickets ✓Immigration Law

"Aitken Robertson has over 100 years of experience representing clients in Ontario. The firm is comprised of a team of seven lawyers and was established by Harry Robertson and John Robertson Q.C. in 1999. Aitken Robertson firmly believes that clients should have competent representation when facing criminal charges. They provide personalized attention to each case, conduct thorough investigations, and carefully scrutinize the prosecution's case from every possible angle. The firm is committed to protecting clients' rights and striving for the best possible outcome. Aitken Robertson acknowledges the financial strain involved and offers flexible fee arrangements, including consideration of Legal Aid Certificates in certain cases. Additionally, they provide a free 30-minute consultation. Richard Aitken is the managing lawyer at Aitken Robertson, and the firm provides legal advice in Ontario, such as Oshawa, Kingston, Toronto, Markham, and North York.

2026 Highlights: Aitken Robertson offers free blood alcohol calculation and flexible payment plans."

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License #2219525

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David J.M. O’Neill - Peterborough, ON Criminal Defence Lawyers - Lawyer Image
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7+ YEARS ON TBR
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DAVID J.M. O’NEILL

AYOTTE DUPUIS GUNSOLUS O’NEILL LAW OFFICES
347 Charlotte Street,
Peterborough, ON K9J 2W1 Directions

Since 2004

Specialty:

✓Criminal Law ✓Criminal Defence ✓Civil Litigation ✓Family Law ✓Trusts and Estates Litigation ✓Commercial Real Estate ✓Construction Liens ✓Contract Remedies ✓Defamation ✓Employment Law ✓Human Rights ✓Insurance Litigation ✓Commercial Leasing ✓Occupational Health and Safety ✓Personal Injury ✓Product Liability ✓Shareholder Remedies ✓Tort Law ✓Wrongful Dismissal ✓Will Challenges ✓Passing Of Accounts ✓Capacity and Guardianship Applications ✓Child Support ✓Spousal Support ✓Decision Making and Parenting Time

"David J.M. O'Neill completed his Bachelor of Laws at the Faculty of Law, University of Windsor and Bachelor of Arts at Davis & Elkins College. He represents clients accused of Criminal offences in the Ontario and Superior Courts of Justice and has conducted multiple Jury trials successfully. He is practicing law at Ayotte Dupuis Gunsolus O’Neill Law Offices, one of Ontario's leading boutique law firms. For over two decades, they have been providing clients with exceptional service. Their lawyers' vast experience will help clients navigate the legal process. Ayotte Dupuis Gunsolus O’neill Law Offices is a full-service law firm in Peterborough and Central Ontario. They work for clients to build solutions to achieve the best results for each legal issue. Call Ayotte Dupuis Gunsolus O’neill Law Offices to get an appointment.

2026 Highlights: David J.M. O’Neill is a proven litigator in Family and Civil Litigation. Ayotte Dupuis Gunsolus O’Neill Law Offices acts for a wide variety of clients, from individuals and small businesses to many of the largest companies in the region."

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License #49634K

Contact:

(705) 748-2325

Mon-Fri: 9am - 5pm
Sat & Sun: Closed

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Joseph Horrigan - Peterborough, ON Criminal Defence Lawyers - Lawyer Image
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4+ YEARS ON TBR
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JOSEPH HORRIGAN

JOSEPH HORRIGAN LAW
311 George Street North, LL5 Unit 6,
Peterborough, ON K9J 3H3 Directions

Since 2018

Specialty:

✓Criminal Defence ✓Bail Hearings ✓Property Offences ✓Sexual Offences ✓Domestic Assault ✓Drug Possession ✓Firearms Offences ✓Breaches of Court Orders ✓Youth Criminal Justice ✓DUI and Impaired Driving ✓Theft and Fraud ✓Provincial Offences ✓Highway Traffic Act Matters ✓Wills ✓Powers of Attorney ✓Small Claims ✓Notary Public ✓Commissioner of Oaths

"Joseph Horrigan completed his Bachelor of Arts degree in Law and Society with distinction from Wilfrid Laurier University. He earned his JD from the University of Ottawa and regularly represents clients in the Ontario Court of Justice and the Superior Court of Justice. Joseph Horrigan is a member of the Law Society of Ontario, the Peterborough Law Association, and the Criminal Lawyers' Association. He is committed to putting his clients' interests first and understands the stress people face when dealing with the criminal justice system. He is dedicated to helping his clients navigate the system effectively and efficiently while always being available to address their concerns. Joseph Horrigan works to protect his clients' Charter rights and achieve the best possible outcomes for them.

2026 Highlights: Joseph believes in advancing any reasonable defence in his client’s best interest, regardless of how it may be considered by the public."

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License #76627P

Contact:

(705) 868-0430

Mon-Fri: 9am - 5pm
Sat & Sun: Closed

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