Heidi India Range (born 23 May 1983) is an English singer-songwriter. She is best known for being a former member of the group Sugababes. Range was an original member of girl group Atomic Kitten, although she left the group two years before releasing any material. In 2001 Range replaced Siobhán Donaghy of the Sugababes and had accumulated six UK number one singles as well as two number one studio albums with the group before splitting in 2011. Range has since concentrated on theatre work.
In 1997, Range auditioned for a part in the group Scooch, but was rejected as she was too young. Instead, she joined Atomic Kitten, a girl group founded by OMD frontman Andy McCluskey, along with Liz McClarnon and Kerry Katona. She recorded several demos and tracks with the group. In 1999 Range decided to leave the group after wanting to pursue a more R&B style of music instead of the pop music Atomic Kitten were making and was therefore replaced with Natasha Hamilton.