International regulatory co-operation (IRC) represents an important opportunity for countries, and in particular domestic regulators, to consider the impacts of their regulations beyond their borders, expand the evidence for decision-making, learn from the experience of their peers, and develop concerted approaches to challenges that transcend borders. This report provides the first OECD assessment of a country's IRC framework and practices. Mexico's active efforts to embrace globalisation are reflected in many aspects of its domestic policies, practices and institutions. On one hand, it has undertaken unilateral efforts to embed international considerations in its domestic rule-making through regulatory improvement disciplines and with the consideration of international standards in the drafting of technical regulations. On the other hand, the Mexican government and individual regulators also engage extensively in co-operative efforts on regulatory matters, at the bilateral, regional and multilateral level. Based on the overview of Mexico's practices and comparison with other OECD countries, the review recommends three areas for improvement: designing a horizontal government-wide strategy for IRC, enhancing information about the tools and benefits of IRC, and offering the necessary tools to support systematic implementation of IRC.