"Du hast den schönsten Arsch der Welt" (English: "You Have the Sweetest Ass in the World") is a German-language song by dance music producer and DJ Alex C. (Alex Christensen).

Due to the song receiving high ratings on several foreign dance charts, it was re-released in several other languages including in English as "Sweetest Ass in the World" as well as in French, Spanish, Dutch and Czech.

Alex C. and Y-ass took part with the song in the 2008 Sopot Hit Festival music competition and were the overall runners-up with 29.7% of the votes in the category International Hit Summer 2008 losing to the eventual winner "Hey Hi Hello" by Shaun Baker feat.

In some countries the melody and the lyrics were adjusted to fit the taste of the local inhabitants.

Some of these versions are: "Du hast den schönsten Arsch der Welt" is the only number-one hit for Alex C. as a solo act on the German Singles Chart, although he had a number-one hit in 1992 as part of U96 with the song "Das Boot".