A comprehensive list of the most popular boy's names in the United States is available through the Social Security Administration's official website. Lists of international boy's names, as well as names sorted by other special interest categories, are available through nameberry.com. Lists of historical boy's names sorted by era are available through BehindtheName.com.
In 2013, the most popular U.S. boy's names were Noah, Liam, Jacob, Mason, William, Ethan, Michael, Alexander, Jayden and Daniel. In the Western world, Biblical names and the names of historical conquerors have always been among the top-ranking names. As of 2013, Michael has been one of the top 10 most popular boy's names in the U.S. for over 50 years; for a period of 10 years it was the number one most popular boy's name.
Name popularity varies strongly by country, even in countries sharing a common language. In the United Kingdom, the most popular boy's name in 2013 were Harry, Oliver, Jack, Charlie, Jacob, Thomas, Alfie, Riley, William and James.
Some of the most popular boy's names have been consistent since medieval times. The most popular medieval English names in the 13th and 14th century, accounting for 70 percent of the population, were Adam, Nicholas, Simon, Geoffrey, Peter, Thomas, Gilbert, Ralf, Walter, Henry, Richard, William, Robert, Hugh, John and Roger.