The actress, known for her role in the BBC hit series Killing Eve, will participate in a procession of national honours as part of the service on Monday.
She joins the delegation as a member of the Order of Canada alongside musician Gregory Charles and Olympic gold medallist swimmer Mark Tewksbury.
Oh was granted the honour recently in June 2022, after building her profile in comedy-drama Killing Eve alongside British actress Jodie Comer.
The pair recently went to head to head at the 2022 Emmy awards for outstanding lead actress in a drama for their roles in the series, but lost out to Euphoria’s Zendaya.
Canada’s delegation to the funeral will be led by Canadian Prime Minister Justin Trudeau and his wife Sophie Gregoire Trudeau and also include governor general Mary Simon as well as former prime ministers and governor-generals.
The group is due to depart for the UK on Friday, ahead of the service next week.
Details of the delegation were made public on Thursday during a special address given by Trudeau during a special session of Canada’s House of Commons.
It was previously announced the day of the Queen’s funeral will be marked in Canada with a national day of mourning.
Oh’s representatives have been contacted for comment.