International Congress on Obesity – ICO 2026

All international delegates are responsible for ensuring they have the correct travel documentation to enter Mexico.

Visa exemptions

Citizens from many countries do not require a visa to enter Mexico for tourism, business, or congress participation if the stay is less than 180 days.

You do not need a Mexican visa if you hold a valid, multiple-entry visa or permanent residence permit for any of the following countries:

  • United States
  • Canada
  • United Kingdom
  • Japan
  • Schengen Area countries

If this applies to you, you only need to present your passport and proof of accommodation or congress registration upon arrival.

Visa required

Delegates from countries not included in Mexico’s visa exemption list must apply for a Visitor Visa (Visa de Visitante sin permiso para realizar actividades remuneradas). This visa allows participation in academic meetings, conferences, and similar events without paid employment in Mexico.

Applications must be made in advance at your nearest Mexican embassy or consulate.

Requirements typically include:

  • A valid passport (minimum six months’ validity)
  • A completed visa application form
  • A recent passport-sized photo
  • Proof of sufficient funds for your stay
  • Proof of travel arrangements and congress registration

Processing times vary, so we recommend applying at least 6–8 weeks before your trip.

Invitation letter

If you require an official invitation letter to support your visa application, please contact the congress secretariat at [insert email address].

Invitation letters are issued only after registration and payment have been confirmed.

Entry at the airport

Upon arrival, immigration authorities may ask to see:

  • Your passport and visa (if applicable)
  • Your return flight ticket
  • Proof of accommodation or your congress registration confirmation

Simón Barquera

President, World Obesity Federation

 Dear colleagues and friends, it is with great pleasure that we welcome you to be part of the International Congress on Obesity, hosted at The World Trade Center Mexico City in Mexico in July 2026.

This Congress is being organised in collaboration with our member organisations Mexican Society of Obesity (SMO), along with our wider network of members including The Mexican Endocrine Society, CLAS, Obesidades, FLASO and key prevention stakeholders.

The Congress will welcome 3,000 delegates from a range of disciplines; including clinicians, policy makers, scientists and UN representatives. We are curating an exciting and dynamic programme that will bring together experts from the clinical, basic science, and public health fields. This will be an exceptional opportunity for delegates to engage with the most cutting-edge developments in the prevention and treatment of obesity, as well a stimulating setting for networking and reconnecting. Of note are also a series of pre-congress workshops and sessions on 14 July 2026.

We look forward to welcoming you to the International Congress on Obesity in Mexico City!