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John Barnosky is a trusts and estates lawyer advising families, individuals, banks, foundations, and other institutions. Jack handles the full range of estate planning, probate and administration, as well as taxation matters. John also represents clients in litigated trusts and estates matters, including will contests, disputes over the validity of trusts, contested accounting proceedings, and tax disputes before the Surrogate’s Courts and other courts throughout New York.

A longtime leader in his field, Jack is a frequent lecturer at New York State Bar Association seminars on trusts and estates topics. He is also a contributor to Farrell Fritz’s New York Trusts & Estates Litigation blog and has published articles in the New York Law Journal, The Nassau Lawyer, and the Journal of the Suffolk Academy of Law. Jack is a co-author of the treatise, “Revocable Trusts,” published by Thomson West, and has written sections of Warren’s Heaton on Surrogate’s Court Practice. Jack is also a former adjunct law professor at Touro Law School.

Location
  • 400 RXR Plaza
    Uniondale, NY 11556-3826
Languages
  • English
Education
  • St. John's University, J.D., graduated 1967
  • Assumption College, AB, graduated 1964
Bar Admissions
  • United States, Supreme Court
  • United States, Tax Court
  • New York, United States
Affiliations
  • American College of Trusts and Estates Counsel - Fellow
  • EPTL/SCPA - Advisory Committee
  • Nassau County Bar Association - Former Chair, Estate and Trust Law Committee
  • New York State Bar Association - Former Chair, Estate and Trust Law Section
  • New York State Bar Association - Former Member, Task Force on Court Reorganization
  • North Fork Bank Estate Review - Former Editor

Farrell Fritz, P.C.
Headquarters: Uniondale, New York

21 The Best Lawyers in America® awards

16 Best Lawyers: Ones to Watch® in America awards

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Lawyer of the Year Badge - 2025 - Litigation - Trusts and Estates Lawyer of the Year Badge - 2020 - Litigation - Trusts and Estates Lawyer of the Year Badge - 2018 - Trusts and Estates Lawyer of the Year Badge - 2017 - Litigation - Trusts and Estates
Named "Lawyer of the Year" by Best Lawyers® for:
  • Litigation - Trusts and Estates, Long Island (2025)
  • Litigation - Trusts and Estates, Long Island (2020)
  • Trusts and Estates, Long Island (2018)
  • Litigation - Trusts and Estates, Long Island (2017)
Recognized in The Best Lawyers in America® 2025 for work in:
  • Litigation - Trusts and Estates
  • Trusts and Estates
Special Focus:
  • Appellate
  • Estate Planning
  • Fiduciary Duties
  • Litigation
  • Nonprofit Organizations and Charitable Giving
  • Planning for Closely Held Businesses
  • Probate
  • Succession Planning
  • Tax
Awards:
  • AV Preeminent Martindale-Hubbell Peer Review Rating
  • The Best Lawyers in America (Litigation - Trusts & Estates; Trusts & Estates), annually since 1999
  • New York Metro Super Lawyers list (Estate & Trust Litigation), 2007-2016
  • Best Trusts & Estates Lawyers in America, American Lawyer, November 2004
  • The Best Lawyers in the U.S., 2008
  • Leading Individual, NY Private Wealth: Disputes, Chambers High Net Worth
  • The Best Lawyers in America "Lawyer of the Year," 2017

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Publications

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