"Bad Girls" is a song by American singer and songwriter Donna Summer from her 1979 seventh studio album of the same name.

"Bad Girls" was a massive success, peaking within the Top 10 of the charts in seven countries, including New Zealand and Spain.

The inspiration for Summer to write "Bad Girls" came after one of her assistants was offended by a police officer who thought she was a prostitute.

Although "Hot Stuff" was extended for the release, "Bad Girls" remained in the original full-length album version.

Billboard magazine called "Bad Girls" a "brassy disco track, which features party sounding production embellishments like hems and whistles.