Sadiha is a village in Siwan district of Bihar, India. There is a nearby railway station named as sarhari railway station which comes under village sadiha. It is home to the Vishnudham Mandir temple and Kali Mandir Hanuman Mandir, Shiv Mandir and Chhath Ghat. Nearby markets include Patedha, Patedhi, Mora, Janta Bazar and Maharajganj. Durga Puja, Chhath Puja, Sarswati Puja, Holi, Diwali is there major festivals.