William Beier (born November 2, 1982, in Manila, Philippines) is a Filipino born German former competitive ice dancer.

They are four-time (2005–2006, 2008, 2010) German national champions, and represented Germany in the 2010 Winter Olympics.

He was a singles skater for two years and then took up ice dancing with his sister, Christina Beier.

In May 2008, the Beiers announced the end of their dance partnership.

They teamed up again following the 2008-09 season and qualified for the Winter Olympics.