Harlene Orendain-Raguin (born June 14, 1983) is a multi-titled Filipina épée fencer. She won the individual épée silver medal at the 2015 Southeast Asian Games and was a member of the team that won the Silver Medal in the Team Épée. She was also an Individual Silver Medalist at the 2007 Southeast Asian Games and a member of the Bronze-winning Team at the 2011 Southeast Asian Games, 2007 Southeast Asian Games, and 2005 Southeast Asian Games .
Locally, Raguin became the Women's épée champion at the 2014 Philippine National Games. During her college years, she represented the University of Santo Tomas Growling Tigers for five years from 2001 to 2005. She was named rookie of the year during the UAAP Season 65 after winning silver medals in both individual and team épée.