Tatiana Grigorieva (Russian: Татьяна Григорьева; born October 8, 1975 in Leningrad, Soviet Union) is a retired Australian pole vaulter. She retired from the sport in 2007 after a 10 year career that saw her win Olympic, Commonwealth and World Championship medals. She went on to star in series six of Dancing with the Stars and as Olympia on the 2008 revival of Gladiators.