Brazil's Council for Economic Defence has made the decision to approve, without restrictions, the merger of shipping lines CSAV and Hapag-Lloyd.
This forms part of a series of notifications that both companies are making to the antitrust authorities around the world.
Regulatory entities in the United States and the European Union have already given their approval, with the Chilean Antitrust Agency deciding not to pursue its investigation of the transaction.
CSAV and Hapag-Lloyd signed a binding agreement in April 2013 to merge their container carrier businesses.
On completion of the agreement, the combined company will be the world’s fourth biggest shipping operator, with a fleet of around 200 containerships.
It will have a total capacity of one million TEU, be capable of shipping 7.5 million TEU annually, and will have combined business sales of over US$12 billion.