The high commission announced that the main event to mark the day will be held at the Potters Fields Park, near the iconic Tower Bridge on Sunday and is expected to be attended by hundreds of people.
"The event is for British friends to enjoy and benefit from the life changing experience of yoga," a high commission statement said.
Another on the 73rd floor of The Shard - London's famous skyscraper and the tallest building in the UK, on Tuesday - the official UN designated date for IDY.
The resolution for International Yoga Day was proposed to the UN General Assembly by Prime Minister Narendra Modi last year.
More From This Section
The initiative found unprecedented support and was adopted by 177 member states without a vote in record time to declare June 21 as International Day of Yoga.
It also calls on the UK's Department of Education to "introduce Yoga in the school physical education (PE) curriculum".