Monarchy is one of the oldest truly global social structures. On the eve of the imperial age, most of the world was governed by monarchs. But as the European empires expanded, this order was radically transformed. During the long nineteenth century, most non-European monarchies were conquered by imperial powers. Often, European imperial powers abolished them, imprisoning, killing, or exiling local rulers; in other cases, the imperial powers incorporated the conquered monarchies into new imperial orders of indirect rule. Yet, there were some monarchies that survived Europe’s imperial expansion. In fact, every country that retained its independence in the era of high imperialism was ruled by a monarch: Ethiopia, China, Japan, the Ottoman empire, Persia (Iran), and Siam (Thailand). To some extent, these monarchs lived in the same social worlds as their European counterparts, forming a global, status-based community. This article offers some observations on the relationship between the world’s monarchs in the age of empire by focusing on encounters between European monarchs and those of the few non-European countries that retained their independence.