Christoph Tobias Metzelder (born 5 November 1980 in Haltern, North Rhine-Westphalia) is a German footballer who plays for FC Schalke 04 as a central defender.

Most of his professional career, which was spent mostly at Borussia Dortmund, was blighted by injuries. He did manage, however, to collect nearly 50 caps for the German national team, appearing with it at two FIFA World Cups.

In the summer of 2000, Metzelder signed by Borussia Dortmund from lowly SC Preußen Münster, and he was an instant success. At the end of his first season in the Bundesliga, he won his first cap for Germany, playing the second half of a 5–2 friendly win in Hungary, on 15 August 2001.

The second season at Dortmund brought him the 2002 national title, and 14 matches with Germany, all the way to the 2002 FIFA World Cup final with Germany. However, he missed the entire 2003–04 season due to an Achilles tendon injury, and only took part in 16 league contests in the following campaign.

After over two years out of the national squad, Metzelder was called by new boss Jürgen Klinsmann for a friendly with China, in October 2005. He also netted his first two league goals, in 1–1 draws against 1. FSV Mainz 05 and Hamburger SV, and would be Germany's undisputed starter at the 2006 FIFA World Cup, partnering with SV Werder Bremen's Per Mertesacker.