Agusan's at-large congressional district may refer to several occasions when a provincewide at-large district was used for elections to Philippine national legislatures from the formerly undivided province of Agusan. Agusan was also represented in the Second Republic National Assembly during the Pacific War. It also elected a representative to the restored House of Representatives and to the first six congresses of the Third Philippine Republic. After the 1967 division of Agusan, the district was abolished and replaced by Agusan del Norte's and Agusan del Sur's at-large districts.