| Flag Size: | 120x80px | ||
| Seal Size: | 100x80px | ||
| Image Map1: |
| ||
| Pushpin Map: | Philippines | ||
| Pushpin Label Position: | right | ||
| Pushpin Map Caption: | Location within the | ||
| Subdivision Type: | Country | ||
| Subdivision Name: | Philippines | ||
| Subdivision Type1: | Region | ||
| Subdivision Type2: | Province | ||
| Subdivision Type3: | District | ||
| Established Title: | Founded | ||
| Established Date: | October 7, 1600 | ||
| Parts Type: | Barangays | ||
| Parts Style: | para | ||
| P1: | (see Barangays) | ||
| Leader Title: | Mayor | ||
| Leader Name: | Jose Edwin B. Hamor | ||
| Leader Title1: | Vice Mayor | ||
| Leader Name1: | Dennis Alfonso L. Escudero | ||
| Leader Name2: | Evelina G. Escudero | ||
| Leader Title3: | Municipal Council | ||
| Leader Name4: | voters (electorate_point_in_time}}|) | ||
| Elevation Max M: | 162 | ||
| Elevation Min M: | 0 | ||
| Population Density Km2: | auto | ||
| Population Blank1 Title: | Households | ||
| Timezone: | PST | ||
| Utc Offset: | +8 | ||
| Postal Code Type: | ZIP code | ||
| Demographics Type1: | Economy | ||
| Demographics1 Title2: | Poverty incidence | ||
| Demographics1 Info2: | % | ||
| Demographics1 Title3: | Revenue | ||
| Demographics1 Title4: | Revenue rank | ||
| Demographics1 Title5: | Assets | ||
| Demographics1 Title6: | Assets rank | ||
| Demographics1 Title7: | IRA | ||
| Demographics1 Title8: | IRA rank | ||
| Demographics1 Title9: | Expenditure | ||
| Demographics1 Title10: | Liabilities | ||
| Demographics Type2: | Service provider | ||
| Demographics2 Title1: | Electricity | ||
| Demographics2 Title2: | Water | ||
| Demographics2 Title3: | Telecommunications | ||
| Demographics2 Title4: | Cable TV | ||
| Blank1 Name Sec1: | Native languages | ||
| Blank2 Name Sec1: | Crime index | ||
| Blank1 Name Sec2: | Major religions | ||
| Blank2 Name Sec2: | Feast date | ||
| Blank3 Name Sec2: | Catholic diocese | ||
| Blank4 Name Sec2: | Patron saint | ||
Casiguran pronounced as /tl/, officially the Municipality of Casiguran, is a 4th class municipality in the province of Sorsogon, Philippines. According to the 2020 census, it has a population of 35,602 people.
Established in the year 1600, Casiguran was the first missionary parish of Sorsogon. When the Spaniards first set foot in this part of Luzon in the 1570s, Casiguran was considered as their center of Kabikolan.
In 1583, the Franciscan missionaries took over the evangelization work started by the Augustinians.
There are three theories on the origin of the town's name. The first is that it came from Gugurang, the supreme deity of the ethnic peoples of Bicol (called Ibalon during the pre-colonial era). The second is a folk legend which narrates that the name originated phonetically from the Bicol phrase kasi gurang
Casiguran is located at the coast of Sorsogon Bay, at the south of Luzon island, making it a suburb of neighboring Sorsogon City. It is from Sorsogon City and from Manila.
Casiguran is politically subdivided into 25 barangays. Each barangay consists of puroks and some have sitios.