In the United States, the descriptive name Keep Away seems to prevail, while Canadian children commonly call the game either Pig in the Middle (Western Canada) or Monkey in the Middle (Eastern Canada, parts of New England, and parts of the Midwest).
In the UK, Australia and New Zealand the name Piggy in the Middle is used (almost) exclusively.
The game is also common in Germany, called "Schweinchen in der Mitte" (Piggy in the Middle) or "Dummer Hans" (Silly John), in Turkey under a name which translates to Rat in the Middle, in Denmark where it is known as what translates into Butter blob, in the Netherlands they call it "Lummelen" or, less commonly, "Aap in het Midden" [lit: "Monkey in the Middle"] and Silly Johnny in Poland.
In America, the term pig in the middle is sometimes used as slang for being under pressure from both sides of a dispute.
The similar term piggy in the middle means the same in the United Kingdom.