In Ireland, the song debuted at number eleven, and after one week it peaked the chart.
Across Europe, "Just Dance" reached the top ten in Austria, Denmark, Finland, Germany, Norway, Sweden, Switzerland and the top twenty of Belgium (Flanders and Wallonia) and France.
Worldwide the song has sold over 10 million digital copies.
"Just Dance" is the debut single by American singer Lady Gaga.
The song was produced by RedOne and co-written by RedOne, Gaga and Akon, while also featuring label-mate Colby O'Donis.