Isobel L.[2] Hannen (born 17 December 1962 as Isobel Torrance Jr.) is a Scottish curler and curling coach.

She competed at the 1992 Winter Olympics when curling was a demonstration sport.

[4] Her mother Isobel Torrance is a former competitive curler, 1982 World bronze medallist and two-time Scottish women's champion.

Hannen's daughter Rachel is also a competitive curler.

This biographical article relating to curling in Scotland is a stub.