Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Arbitration

Directory of arbitrators

Search for a TAO arbitrator by name, country, language, chamber or availability, and read the entry.

Updated : October 28, 2026· 3 min read

A directory to help decide

The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)
The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)

The directory brings together the entries of the TAO's 142 arbitrators. It can be consulted online without an account and allows filtering by language, country, chamber, specialism and availability. It is used to prepare the appointment of arbitrators, but also to understand who sits on the tribunal.

Entries are updated every quarter, from information supplied by the arbitrators and checked by the Registry.

This page describes the filters, the content of an entry and the data protection rules.

  • Directory
  • Entry
  • Filter

Directory of arbitrators in figures

142Entries
11Filterable languages
4Chambers
QuarterlyUpdate

Source: Registry of the OIMAP Arbitral Tribunal.

Breakdown

French64%
English78%
Spanish38%
Other languages26%

Share of arbitrators by language (several languages possible).

Searching the directory

Search is by name, but also by cumulative filters: languages of proceedings, chamber, specialisms, country of practice, law taught, availability. A free-text search engine finds arbitrators by keywords: "Chinese ceramics", "tribal art", "restitution", "Islamic law".

Results are sorted by relevance. A button adds an arbitrator to a list of candidates that can be shared with your counsel or with the opposing party.

Self-Portrait, John I Smart (1802)
Self-Portrait, John I Smart (1802)
St. Anthony Reading, Albrecht Dürer (1519)
St. Anthony Reading, Albrecht Dürer (1519)
Portrait Bust of a Man (27 BCE–14 CE)
Portrait Bust of a Man (27 BCE–14 CE)

The content of an entry

The entry shows a photograph, languages, country, career, specialisms, date of listing, number of cases and a brief curriculum. It also states availability (immediate, within two months, limited) and any declared links with the market.

Personal contact details are not published. All contact goes through the Registry, which informs the arbitrator and ensures equality between the parties.

Personal data and accuracy

Arbitrators consent to the publication of their entry. They can correct it at any time. The tribunal publishes neither individual fees nor evaluations. The information is kept for the duration of the listing and then archived for five years.

If any information seems inaccurate to you, report it to the Registry. The parties may also report an undeclared link, which may justify a challenge.

Selection assistance

The Registry offers a pre-selection service: from a short description of the dispute (language, type, stakes, time frame), it suggests three names, with their availability. The parties remain free to choose elsewhere.

This service is free of charge and does not prejudge the appointment, which is for the parties or, failing that, the council. The suggestions are sent to both parties simultaneously to preserve fairness.

Available filters

Four main filters
FilterExampleUsefulness
LanguageEnglishInternational procedure
ChamberProvenanceSpecialism of the dispute
CountrySwitzerlandSeat of the arbitration
AvailabilityImmediateTime limits

Milestones

  1. Paper directory

    First list.

  2. Online directory

    Basic filters.

  3. Free-text search

    Keywords.

  4. Candidate lists

    Sharing with counsel.

No direct contact

Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)
Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)
Portrait of a Man, Nicholas Freese (c. 1795–1800)
Portrait of a Man, Nicholas Freese (c. 1795–1800)
Woman Sitting Reading , Georges Lemmen (1905)
Woman Sitting Reading , Georges Lemmen (1905)

Online directory or Registry advice

Portrait of Sandford Peacocke, William Wood (1801)

Directory

Self-service
  • Available 24/7
  • Precise filters
  • Assumes you know your need

First reflex.

The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)

Registry advice

On request
  • Selection of three names
  • Knowledge of real availability
  • Two-day lead time

If you are unsure.

Using the directory

  1. Define

    Language and field.

  2. Filter

    Apply the criteria.

  3. Read

    Entries.

  4. Shortlist

    List of candidates.

  5. Propose

    Inform the Registry.

Before choosing

A lawyer

Portrait of Georges Arnold Fitzwilliam, Charles Balthazar Julien Fevret de Saint-Mémin (c. 1790–1852)
« The directory let me present three credible candidates to my client in half an hour. The choice was made calmly. »
Me Clara Delmas, lawyer

Vocabulary of the directory

Entry
Individual notice on an arbitrator.
Filter
Search criterion.
List of candidates
Personal selection of arbitrators.
Declared link
Relationship mentioned by an arbitrator.

Frequently asked questions

May I download the directory?

Yes, as a PDF.

Are arbitrators paid?

Yes, according to the scale.

Can an arbitrator refuse?

Yes, on grounds of unavailability.

Where can I see the specialisms?

Useful documents

Contacts

A Palace with an Arched Bridge (A Roman Villa), Hubert Robert (1760)
A Palace with an Arched Bridge (A Roman Villa), Hubert Robert (1760)
Registry of the Arbitral Tribunal (TAO)Paris — Head Office+33 1 00 00 04 00greffe.tao@oimap.exampleMonday to Friday, 9 a.m. – 5 p.m.

See appointment

High Class Students and Teachers at Bishop Cotton School, Shimla (verso), Raja Deen Dayal (c. 1882–87)

How to appoint an arbitrator.

Appointment
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