Sebastian "Baste" Zimmerman Duterte (/dəˈtɜːrteɪ/; Tagalog: [dʊˈtɛɾtɛ]; born November 3, 1987) is a Filipino politician serving as Mayor of Davao City since June 30, 2022.

He is the youngest son of 16th President Rodrigo Duterte and Elizabeth Zimmerman, a Filipina flight-attendant of Filipino and German American descent.

[2] Duterte obtained his high school diploma at San Beda College in Manila.

[13][14] During his tenure as mayor of Davao City, Duterte oversaw efforts to advance digitalization, economic development, and community engagement.

On January 28, 2024, he attended the Hakbang ng Maisug prayer rally held in Davao City with his father Rodrigo and sister Sara, which opposed the Marcos administration's Bagong Pilipinas rally in Manila and supported constitutional reforms.

[16] During a political forum on the same day, he asked President Bongbong Marcos to resign, accusing him of laziness and incompetence.