Bossa Brazil will represent the Rio CVB in the UK at travel trade shows and events, as well as related activities with tour operators and agents.
It will support those businesses already selling Rio, as well as those interested in offering it as part of their programmes and packages for the first time.
Pre-Covid, international travel was worth around US $6 billion to Rio annually, the city serving as a gateway to Brazil for tourists.
Roberta Werner, Rio CVB executive director, said the UK market was an important source of tourism revenue for Rio and for Brazil.