The Settlers of Catan, sometimes shortened to Catan or to Settlers, is a multiplayer board game designed by Klaus Teuber and first published in 1995 in Germany by Franckh-Kosmos Verlag (Kosmos) as Die Siedler von Catan. Players assume the roles of settlers, each attempting to build and develop holdings while trading and acquiring resources. Players gain points as their settlements grow; the first to reach a set number of points, typically 10, wins. The game and its many expansions are also published by Catan Studio, Filosofia, GP, Inc., 999 Games, Κάισσα, and Devir.

The Settlers of Catan became one of the first German-style board games to achieve popularity outside Europe. As of 2015, more than 22 million copies in 30 languages had been sold. The game involves large amounts of strategy, while still being fairly simple to learn.