Atty. John L. Gardiner

Atty. John L. Gardiner

John L. Gardiner is co-head of Skadden’s International Litigation and Arbitration Group.

Call (212) 735-3000 Book Appointment

Profile Summary

About John L. Gardiner at a glance

John L. Gardiner is a business, litigation, adr, and international attorney based in New York, New York, practicing at Skadden, Arps, Slate, Meagher & Flom LLP. Admitted to practice in New York, New York State Bar Association and Ireland, Law Society of Ireland. Educated at University College Dublin (J.D., 1988). Recognitions include Best Lawyers in America — Commercial Litigation (2026), Best Lawyers in America — International Arbitration - Commercial (2026), and Best Lawyers in America — International Arbitration - Governmental (2026). Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

John L. Gardiner is co-head of Skadden’s International Litigation and Arbitration Group. He concentrates his practice in the resolution of complex, high exposure, multijurisdictional disputes before federal and state courts, as well as leading arbitral institutions.

Mr. Gardiner was selected for inclusion in Chambers Global: The World’s Leading Lawyers for Business 2013 and 2014. He repeatedly has been listed in The Best Lawyers in America, the International Who’s Who of Commercial Arbitration andChambers USA: America’s Leading Lawyers for Business.

Mr. Gardiner’s extensive litigation, arbitration and mediation experience covers a wide range of disputes in the aluminum, energy, insurance/reinsurance, telecommunications, construction and finance sectors. He also has acted as arbitrator in complex international corporate disputes and as mediator in intricate corporate and partnership separation situations. He has participated as counsel in many successful mediations and expert proceedings both internationally and domestically.

Mr. Gardiner’s experience includes representing:

  • a multinational oil drilling and services company in various disputes spanning three continents and coordinating a cohesive litigation/arbitration strategy;
  • a major U.S. medical device company in federal court litigation to compel its counterparty to close a multibillion-dollar merger;
  • the claimant in an ICC arbitration involving a power plant in Brazil;
  • a claimant in an ICC arbitration concerning certain option rights in joint ventures in Brazil and Suriname;
  • the Argentine subsidiary of a major U.S. energy company in a shareholders’ dispute before the ICC involving a gas transportation system and processing facility in Argentina;
  • a group of U.S.-based insurance agencies in a series of litigations against their former principal in state and federal courts in several jurisdictions, and arbitrations before AAA and ad hoc tribunals;
  • a leading U.S. accounting firm in securities class actions and accounting malpractice actions in state and federal court throughout the United States;
  • a Hong Kong-based shipping company in an ICDR arbitration and obtaining a preliminary injunction in aid of arbitration;
  • the claimant in an ICC arbitration arising out of the construction of a gas pipeline in Colombia;
  • a leading international vehicle-rental business in a post-acquisition dispute with a French bank before the ICC;
  • a leading U.S. bank in litigation in federal and state court to recover for fraudulent inducement to contract and breach of warranty in connection with its purchase of a business from a leading Japanese conglomerate;
  • a client in a mediation and ad hoc arbitration arising out of the construction and operation of a power project in Brazil;
  • a Spanish insurer in a dispute before the Supreme Court of New York, where a dismissal was obtained on grounds of forum selection, lack of personal jurisdiction and forum non conveniens;
  • a former director and officer of a major international insurance company in shareholder derivative litigation before the Delaware Court of Chancery;
  • the claimant in a post-closing purchase price adjustment dispute before the AAA arising out of a sale of the claimant’s interests in a propane and industrial gases distribution company;
  • in maritime attachment proceedings before the Southern District of New York for a U.S. aviation group;
  • the owner of a large power plant in Indonesia in an arbitration before the Singapore International Arbitration Centre (SIAC) against its principal coal supplier for breach of an exclusive fuel supply contract for one of the first independent power projects in India;
  • a major insurance underwriting agency in an ad hoc arbitration venued in London involving an agency dispute with an aviation and aerospace insurance business in the United Kingdom;
  • a major computer manufacturer in an ICC arbitration and related litigation arising out of its agreement to acquire a competitor;
  • a large Polish conglomerate in an ICC dispute brought by a U.S.-based venture capital firm; and
  • a European developer and producer of automobile safety equipment in an ICC arbitration in Switzerland involving the misappropriation of confidential and proprietary knowledge in the automotive industry.

    Mr. Gardiner’s representations have included, among others, Maurice R. Greenberg; C.V. Starr & Co., Inc.; Starr International Company, Inc.; Citigroup Inc.; Salomon Smith Barney Inc.; Enron Corp.; Deloitte & Touche LLP; Avis Group Holdings, Inc.; Elektrim S.A.; Laser Industries Limited; and Hoechst A.G.

    Lectures and Presentations:

    • “Witness Preparation in International Arbitration”, ICCA 2010 conference, Rio De Janeiro, Brazil (May 2010); and
    • “Multi-Party Disputes and Joinder in International Arbitration,” ICCA 2008 conference, Dublin, Ireland (June 8-10 2008)

    Practice Areas Explained

    John L. Gardiner's Areas of Practice

    Each practice area below reflects the types of cases John L. Gardiner handles, with a brief overview of what that area of law covers.

    Business & Corporate Law

    Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

    John L. Gardiner is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New York →

    Civil Litigation

    Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

    John L. Gardiner is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New York →

    Mediation & Arbitration

    Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

    John L. Gardiner is one of 73,906 adr attorneys indexed nationally. Browse adr attorneys in New York →

    International Law

    International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

    John L. Gardiner is one of 40,133 international attorneys indexed nationally. Browse international attorneys in New York →

    Jurisdictional Context

    Why local counsel matters in New York

    Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York 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 New York courts without local counsel or pro hac vice admission.

    Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.

    Frequently Asked

    Common questions about John L. Gardiner

    Where is John L. Gardiner's law office located?
    John L. Gardiner's law practice is located in New York, New York. The firm is Skadden, Arps, Slate, Meagher & Flom LLP. You can contact the office directly through this profile page.
    What practice areas does John L. Gardiner handle?
    John L. Gardiner focuses on business, litigation, adr, international. Each practice area listed reflects experience handling cases of that type in New York.
    Where did John L. Gardiner go to law school?
    John L. Gardiner earned their education at (J.D., 1988).
    How can I contact John L. Gardiner for a consultation?
    You can contact John L. Gardiner 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 John L. Gardiner received?
    John L. Gardiner's notable recognition includes: Best Lawyers in America — Commercial Litigation; Best Lawyers in America — International Arbitration - Commercial; Best Lawyers in America — International Arbitration - Governmental; Best Lawyers in America — Additional Areas of Practice:; Best Lawyers in America — International Trade and Finance Law.

    Education

    J.D.
    University College Dublin
    - 1988

    Awards

    Best Lawyers in America — Commercial Litigation
    - 2026
    Best Lawyers in America — International Arbitration - Commercial
    - 2026
    Best Lawyers in America — International Arbitration - Governmental
    - 2026
    Best Lawyers in America — Additional Areas of Practice:
    - 2026
    Best Lawyers in America — International Trade and Finance Law
    - 2026
    Best Lawyers in America — Litigation - Intellectual Property
    - 2026
    Best Lawyers in America — Special Focus:
    - 2026
    Best Lawyers in America — Global
    - 2026

    Bar Admissions

    New York, New York State Bar Association
    Ireland, Law Society of Ireland

    Reviews

    These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

    No reviews yet.