- For the municipality in Camiguin, see Sagay, Camiguin.
Sagay City is a 2nd class city in the province of Negros Occidental, Philippines. Sagay City was originally called Arguelles when it was founded in 1860 by Teniente Francisco Rodriguez and Basilio Cordova in the mouth of the Bulanon River. Later, the Spanish authorities transferred the town to what is now a baranggay called Old Sagay, but was then called Pueblo de Magallanes.
In 1906 the town was officially changed to Sagay. The name was taken from the semi-spherical shell called “sigay.” After World War II, the seat of government was transferred to the present site, Dalusan, because of its accessibility to land transportation. On 11 June 1996 Republic Act 8192 was passed and Sagay became a City.
According to the 2000 census, it has a population of 129,765 people in 25,301 households.
Sagay City is politically subdivided into 24 barangays.