The objective of this article is to identify possible challenges the Pacific Alliance will have to face in terms of economic competition policy. To this end, the case of the competition policy model of the European Union, which consolidates a single market within a Regional Trade Agreement analyzed from the regional integration theory, is taken. Among the conclusions in the article it is important ot highlight that the Pacific Alliance is not only a trade integration efffort, but also addresses social and political objectives. However, the Pacific Alliance is still in its initial stages in terms of its institutional structure and greater progress is expected for it to be able to face the diverse problems of regionalism, as well as in the competition area. Member countries will need to adjust their sociopolitical and legal regulations and stipulations taking into account the current developmental stage of their economies.