Atty. Peter J. Kajko

Atty. Peter J. Kajko

Mr. Kajko is an experienced trial attorney who concentrates his practice in the litigation of complex domestic relations, custody, civil and criminal cases in all trial courts of the Commonwealth including the Probate and Family Court, Superior Court and District Court.

Lexington Lexington 38 yrs experience 38 year
Call (781) 860-9500 Book Appointment

Profile Summary

About Peter J. Kajko at a glance

Peter J. Kajko is a family law attorney based in Lexington, Massachusetts, practicing at Kajko, Weisman & Colasanti LLP. They have 38+ years of legal experience, licensed to practice since 1988. Admitted to practice in Massachusetts (1988). Educated at Western New England University School of Law (J.D., 1988) and Tufts University (—, 1984). Recognitions include Best Lawyers in America — Family Law (2026), Best Lawyers in America — Awards: (2026), and Best Lawyers in America — Super Lawyer, New England's Super Lawyer/Boston Magazine 2013, 2014, 2015 (2026). Serands clients in Lexington, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Kajko is an experienced trial attorney who concentrates his practice in the litigation of complex domestic relations, custody, civil and criminal cases in all trial courts of the Commonwealth including the Probate and Family Court, Superior Court and District Court
  • He has handled divorce cases with marital estates valued over seventy million dollars
  • Mr. Kajko also represents clients in the negotiation and drafting of prenuptial and post-nuptial agreements
  • He represents business executives in employment matters including the negotiation of severance packages and exit strategies
  • Attorney Kajko has tried over 100 jury and non-jury cases to completion in various courts of the Commonwealth including a seven week trial in Middlesex Superior Court which resulted in a collected multi-million dollar judgment for the firm's client
  • Mr. Kajko has been appointed as a Special Master, Parenting Coordinator, Guardian ad Litem, and Real Estate Commissioner by various Justices of the Probate and Family Court
  • Attorney Kajko has also served as a Conciliator and Mediator

Practice Areas Explained

Peter J. Kajko's Areas of Practice

Each practice area below reflects the types of cases Peter J. Kajko handles, with a brief overview of what that area of law covers.

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

Peter J. Kajko is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

Practicing law in Massachusetts. Legal matters in Massachusetts are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Lexington are typically filed in the local municipal court or the appropriate Massachusetts state district court, depending on subject matter and amount in controversy. An attorney licensed in Massachusetts brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Massachusetts courts without local counsel or pro hac vice admission.

Looking for additional Massachusetts attorneys? Browse all attorneys in Lexington or all attorneys in Massachusetts.

Frequently Asked

Common questions about Peter J. Kajko

Where is Peter J. Kajko's law office located?
Peter J. Kajko's law practice is located in Lexington, Massachusetts. The firm is Kajko, Weisman & Colasanti LLP. You can contact the office directly through this profile page.
What practice areas does Peter J. Kajko handle?
Peter J. Kajko focuses on family law. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has Peter J. Kajko practiced law?
Peter J. Kajko has 38+ years of legal experience and has been licensed since 1988.
Where did Peter J. Kajko go to law school?
Peter J. Kajko earned their education at (J.D., 1988); (—, 1984).
How can I contact Peter J. Kajko for a consultation?
You can contact Peter J. Kajko directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Peter J. Kajko received?
Peter J. Kajko's notable recognition includes: Best Lawyers in America — Family Law; Best Lawyers in America — Awards:; Best Lawyers in America — Super Lawyer, New England's Super Lawyer/Boston Magazine 2013, 2014, 2015; Best Lawyers in America — The Best Lawyers in America, 19th Edition (2013), 20th Edition (2014). 21st Edition (2015), and 22nd Edition (2016)..

Practice Areas

Education

J.D.
Western New England University School of Law
- 1988
Tufts University
- 1984

Awards

Best Lawyers in America — Family Law
- 2026
Best Lawyers in America — Awards:
- 2026
Best Lawyers in America — Super Lawyer, New England's Super Lawyer/Boston Magazine 2013, 2014, 2015
- 2026
Best Lawyers in America — The Best Lawyers in America, 19th Edition (2013), 20th Edition (2014). 21st Edition (2015), and 22nd Edition (2016).
- 2026

Bar Admissions

Massachusetts
Admitted: 1988

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