Corina-Isabela Peptan (born March 17, 1978) is a Romanian chess player holding the titles of International Master (IM) and Woman Grandmaster (WGM).

She was world girls' champion in several age categories: Under 10 in Timișoara 1988, Under 12 in Fond du Lac 1990, Under 14 in Warsaw 1991, and Under 18 in Guarapuava 1995.

[2] Peptan won the Romanian women's championship twelve times (1994, 1995, 1997, 2000, 2004, 2007, 2008, 2009,[3] 2014, 2015, 2017 and 2019).

She competed in the Women's World Chess Championship in 2000, 2001 and 2004.

In the European Club Cup for Women, she played for the victorious team AEM-Luxten Timișoara in 1998.