Harry, 29, will arrive in Brazil on 23 June for seven days of official engagements.
The visit, which is designed to enhance the partnership between the UK and the two countries, will see Harry tour hospitals, charities and environmental projects as well as seeing two World Cup matches.
Prince Harry will undertake a seven-day tour
Brazil 23 June - Brasilia - Harry will visit a hospital specialising in rehabilitation, orthopaedic and neuropsychological work followed by the Cameroon v Brazil World Cup match.
24 June - Belo Horizonte - The Prince will go to the training base for Team GB and Paralympics GB during the Rio 2016 Olympics followed by the Costa Rica v England World Cup match.
25 - 26 June - Sao Paulo - Harry will visit an environmental project to help protect the Atlantic Rainforest; a community programme supporting disadvantaged children followed by the Queen's Birthday Party hosted by the British Ambassador to Brazil at the GREAT Britain House and a social project to help reduce crime and drug abuse.
The Prince previously visited Brazil in March 2012
27 June - Santiago - Harry will lay a wreath at the monument of Chile's founding father Bernardo O'Higgins; the Presidential Palace for a meeting with President Michelle Bachelet. Later he will visit a kindergarten for underprivileged children; a visit to a military unit; and the Queen's Birthday Party, hosted by the British Ambassador to Chile.
28 June - Valparaiso - The royal will meet firefighters of the 11th Fire Company (the British volunteers), representatives of the city's other fire services and members of the British community; families affected by the Valparaiso fires in April 2014; and an NGO which provides emergency housing for those living in poverty.
29 June - Santiago - Harry will visit a charitable foundation that provides day care for children with mental and physical disabilities.