This year's Association of National Olympic Committees (ANOC) General Assembly in Seoul has been moved back to 2021 because of the COVID-19 pandemic.
The key meeting, which brings together all of the world's National Olympic Committees (NOC), was due to take place in the South Korean capital on November 25 and 26.
ANOC and the Korean Sport and Olympic Committee (KSOC) said it was in the "best interests" of NOCs and other Olympic stakeholders to postpone.
The General Assembly will remain in Seoul, the 1988 Olympic host city, in 2021, with new dates due to be announced after "further review".
Alternative ways for NOCs to express ideas and opinions are being assessed, ANOC said, while reports and updates that would have been heard this year will be provided.
"We are of course disappointed that we will not be hosting our General Assembly this year, but we believe that given the current global circumstances, it is the right decision to take," said ANOC's Acting President Robin Mitchell.
"We would like to thank our partners at the KSOC for all their hard work and for the flexibility they have shown.
"We will continue to work closely with the KSOC and look forward to welcoming the world's NOCs to Seoul in 2021."
The COVID-19 pandemic has led to a state of lockdown in most countries around the world and major restrictions on international travel.