The fifth season of Dancing with the Stars premiered on September 24, 2007 with a special three-night premiere week. The season ended on November 27, 2007. As with previous seasons, CTV Television Network had aired the series in Canada.

"24" became the most popular lowest score per round. Eight were given to couples that landed in the bottom of the leader board.

The show was hosted by Tom Bergeron, with returning judges Len Goodman, Bruno Tonioli, and Carrie Ann Inaba. Co-host Samantha Harris gave birth on September 23, 2007; during her leave of absence season two champion Drew Lachey served as co-host. On October 15, 2007 Harris returned to the show.

On August 29, 2007, the celebrity cast was announced on Good Morning America by host Tom Bergeron, judge Carrie Ann Inaba, and reigning celebrity champion Apolo Anton Ohno.