Sian Lloyd (b. July 3, 1958) is an ITV weather presenter. She was born in Maesteg, Glamorgan in Wales.

She rose to further fame when she appeared in I'm a Celebrity, Get Me Out of Here!, and is seen on television advertising Arthur Llewelyn-Jenkins furniture stores in her homeland, Wales. (She is a fluent Welsh language speaker.)

She is engaged to Lembit Öpik, the MP for Montgomeryshire, and they are due to marry in 2005.