Sienna Guillory (born 16 March 1975 in Northamptonshire) is a British film and television actress.
Sienna Gelli's debut film was the 1993 tv movie Jockey. In 2000, after participating in "Meet a Girl Like You", he starred in the mini-TV series "New Trojan Horse Slaughter City". In 2003, she played the role of Jill in Resident Evil 2: Revelations. In 2010, she joined Crime Scene Investigation. In 2011, she returned to Resident Evil 5.