A Berliner Pfannkuchen (also called Berliner Ballen, Berliner, or Bismarck in Canada) is a predominantly German and Central European doughnut made from sweet yeast dough fried in fat or oil, with a marmalade or jam filling and usually icing, powdered sugar or conventional sugar on top. They are also sometimes available with a chocolate, champagne, custard, mocha, or advocaat filling, or with no filling at all. The filling is injected using a large syringe after cooking.

The terminology used to refer to this delicacy differs in various areas of Germany. While most areas call it Berliner (Ballen), residents of Berlin, Brandenburg and Saxony know them as Pfannkuchen, which in the rest of Germany generally means pancakes. In parts of southern and central Germany (Bavaria) as well as in much of Austria, they are a variety of Krapfen; in Hessen they are referred to as Kraeppel or Kreppel, or, in Palatinate, Fastnachtsküchelchen (literally: "carnival cakes").

The word Krapfen is derived from Gothic language krappa, Old High German kraffo'. In Tirol part of northern Italy, the name is Krafen or "Krapfen". In Slovenia, it's krof, in Croatia Krafne, in Bosnia, and Serbia krofne.

In Poland they are known as pączki. In Hungary, it is called fánk. All of these are essentially identical.

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