Tamsyn Carolyn Lewis is an Australian media personality and former track and field athlete who won a total of eighteen Australian Championships across the 400 metres, 800 metres and 400m hurdles. She first represented Australia in 1994, and won the 800 metres in the 2008 World Indoor Championships.

The 2008 IAAF World Indoor Championships in Athletics were held at the Luis Puig Palace in Valencia, Spain, March 7–9, 2008.