Julius Cesar "Jay" Vijandre Vergara (born January 5, 1960) is a Filipino politician. He is currently serving as representative of the 3rd District of Nueva Ecija in the House of Representatives of the Philippines since 2025. He served as Vice Mayor of Cabanatuan from 2019 to 2025. He also served as Mayor of Cabanatuan from 2010 to 2019, a position he previously held from 1998 to 2007.
Vergara was born on January 5, 1960 in Ermita, Manila, to Cesar Vergara and Evangelina Vijandre.
In 1998 elections, Vergara became a mayor of Cabanatuan until 2007. In June 2010, Vergara returned as mayor of Cabanatuan after he defeated his cousin Alvin Vergara for three consecutive terms.
In 2019, Vergara was elected as vice mayor of Cabanatuan after his he finished three consecutive terms as mayor.
In 2025 elections, Vergara is represented the third district of Nueva Ecija after he succeeded his wife.
Vergara is married to Rosanna Vergara and has three children including Myca Vergara, current mayor of Cabanatuan since 2019.