Top-Rated Translators and Interpreters in Tokyo for Corporate Events

1. Simul International

Established in 1965, Simul International is one of Japan’s oldest and most respected interpretation agencies. They have built their reputation by providing highly skilled simultaneous and consecutive interpreters for global conferences, ministerial meetings and corporate boardrooms. 

Their team works in over 20 languages, including Japanese, English, Chinese, Korean, and French, and many of their interpreters come from their in-house training programme, which is regarded as one of the most rigorous in the country.

Simul also offers comprehensive event support, including booth setup, interpretation equipment, and hybrid solutions for remote participants, making them a particularly reliable partner for event planners handling multilingual, multifaceted events.

2. Arc Communications

Founded in 2005 and based in central Tokyo, Arc Communications has a reputation for matching interpreters with in-depth industry knowledge to the right projects. Their interpreters frequently work in sectors such as IT, pharmaceuticals, finance, and manufacturing — fields where precise terminology is crucial. 

Arc Communications provides both simultaneous and consecutive interpretation services in Japanese, English, Chinese, and Korean.

3. Japan Association of Conference Interpreters (JACI)

Since its launch in 2015, the Japan Association of Conference Interpreters (JACI) has grown to become a leading professional association of some of the most experienced interpreters in the country. JACI’s members routinely handle high-stakes interpretation at G7 summits, international arbitration cases, and corporate mergers and acquisitions negotiations.

Planners can use the association's online directory to find interpreters by specialisation, language pair and experience. 

While most members work in Japanese and English, many also offer additional languages such as Chinese, Korean, French, German and Spanish. For events where quality and discretion are paramount, JACI’s roster offers direct access to highly vetted professionals.

4. Communicators Inc.

Founded in 1990 and based in Minato-ku, Tokyo, Communicators, Inc. provides a comprehensive range of interpreting and translation services to business, academic, and government clients. 

They specialise in matching interpreters with in-depth knowledge of specific sectors — from pharmaceuticals to legal affairs — and provide simultaneous and consecutive interpretation services in Japanese, English, Chinese, and Korean.

They also provide interpreter dispatch, training and technical support for on-site or hybrid events. For event planners managing high-stakes discussions or detailed content delivery, Communicators provides the perfect combination of linguistic expertise and professionalism.

5. Toppan Translation Services

As part of the Toppan Printing Group, Toppan's Translation and Interpretation Division provides language support for academic, technical and corporate events. They are best known for document translation, but their interpreting services are also in high demand for large conferences and academic symposia, particularly those involving Japanese, English, Chinese, and Korean translations.

Founded in 1900, Toppan has the size and logistical expertise of a major corporation, with the language division evolving later. Their interpreters are trained to handle complex terminology, and the company can provide both on-site and remote interpretation setups, making them a reliable choice for large-scale or hybrid corporate events.

Wrapping Up

When planning a corporate event in Tokyo, it is important to consider cultural details, cross-border communication, and technical accuracy. The interpreters and agencies listed above do more than just translate; they enhance the experience, ensuring that every participant can engage fully, regardless of language.

Whether you are coordinating an executive roundtable, an academic forum or a large-scale international summit, these professionals can ensure that your message is conveyed clearly and has an impact.