Agusan del Sur, officially the Province of Agusan del Sur (Cebuano: Habagatang Agusan; Butuanon: Probinsya hong Agusan del Sur; Filipino: Lalawigan ng Agusan del Sur), is a landlocked province in Caraga Region, Mindanao, Philippines.
Description[]
The flag has a 2:3 proportion with a plain yellow background and the provincial seal on the center of the flag.