Katahariya (Maithili: कटहरिया) is a municipality in Rautahat District in the Narayani Zone of south-eastern Nepal. Before September 2017, Katahariya was one of the Village Development Committees (VDC) with 8 wards. At the time of the 1991 Nepal census, it had a population of 4,619 people living in 835 individual households. Katahariya is famous for its unique moton dish. A well known moton dish named “Katiya : कटिया” is origin from Katahariya Bazar. It has a well-maintained Farmers' market (vegetable) and Cattle (domestic-animal) market. Katahariya is a fast-growing municipality, with the main occupations of local people being business and farming.

Katahariya कटहरिया
Municipality
Katahariya Location in Nepal
Coordinates: 26°58′N 85°13′E / 26.97°N 85.21°E / 26.97; 85.21
Country	Nepal
Development Region	Central
Zone	Narayani
District	Rautahat
Province	Province No. 2
Government
• Mayor	Ajay Prakash Jaiswal
• Deputy Mayor	Rita Devi Yadav
Area
• Total	40.69 km2 (15.71 sq mi)
Population  (2011)[1]
• Total	38,513
• Density	950/km2 (2,500/sq mi)
• Religions	Hindu Muslim Christian
Languages
• Local	Maithili, Tharu, Nepali
Time zone	UTC+5:45 (NST)
Postal Code	44500
Area code	055
Website	www.katahariyamun.gov.np

Katahariya became a municipality since September 2017 by merging different Gaupalika (previously VDCs) such as Hathiyahi, Birti Prastoka, Bhasedhawa, Bagahi, Balirampur, Pipra Pokhariya. Currently, there are 9 wards in this municipality. In the recent local level election conducted on 13 May 2022, Ajay Prakash Jaiswal from Nepali Congress became the mayor.^[2]