Ziradei (also spelt Jiradei) is one of the administrative divisions of Siwan district in the Indian state of Bihar.
Ziradei is located at
Rajendra Prasad, the first President of India was from Ziradei, and the Ancestral House of Rajendra Prasad can still be visited there.
Panchayats in Ziradei community development block are: Akolhi, Mairwa, Don Bazar, Gangpaliya, Badhenya, Bharauli, Chandauli Gangauli, Chandpali, Chhotaka Manjha, Garar, Hasua, Jamapur, Manjhawalia, Miya Ke Bhatkan, Narindrapur, Sakara, Thepaha, Titara and Ziradei.
As per 2001 census, Ziradei block had a population of 138,078.