Secret of the Heart is a 1998 Hong Kong television drama produced by TVB that was first aired from 16 February to 10 May 1998. The drama had a powerful roster cast that is made up of Felix Wong, Gallen Lo, Sunny Chan, Nick Cheung, Amy Kwok, Kathy Chow, Jessica Hsuan and Ada Choi. It won three TVB Anniversary Awards, including Best Actor for Gallen Lo, Best Actress for Ada Choi and Best On-Screen Improvement Award for Nick Cheung.

The drama also received a late night hour rerun during 2003 and 2010. It was digitally remastered for the 2010 rerun.