Katie Green (born 28 August 1987) is an English model from Chichester, West Sussex. Her potential was initially recognised by Surrey photographer Ian MacFadyen, who arranged a test-shoot for her at Image Park Studio in West Sussex, paving the way for her successful modelling career.

Green then went onto join Premier Model Management but later quit after being told she needed to lose 2 stone (28 lb; 13 kg) and go from a UK size 12 to a UK size 8-10 despite being 5 ft 10 in (1.78 m) tall.

She signed with Unleashed PR and Green was then signed as the new face of Ultimo's D-G Range alongside fellow model Melinda Messenger and Spice Girl Mel B.

In July 2009 Katie launched a campaign with Liberal Democrat MP Lembit Öpik. They have begun a petition to put an end to size zero models and underweight models taking to the catwalk or indeed working in the fashion industry at all. Once they reach 20,000 signatures they will present it to the Prime Minister and Parliament to try to have a policy put in place whereby all models are health checked regularly before undertaking any assignments.