Katihar is a town situated in the north eastern part of Bihar state in India. It is headquarters of Katihar district.
Katihar is located at 25°32N 87°35E / 25.53°N 87.58°E / 25.53; 87.58. It has an average elevation of 20 metres (65 feet). Katihar is a famous Railway Junction with five railway lines/routes. Angika is the main language spoken in Katihar.