Family name リーダー (Leader 
, Rieder , Reader 
) , all around the world, is a common last name. The surname リーダー is habitual in Saint Kitts and Nevis, where it is quite a common surname, Austria, and Switzerland (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, Germany, and the United Kingdom. Very seldom, リーダー is the forename as well as the last name.