| Ziradei | |
| Other Name: | Jiradei |
| Settlement Type: | Community development block |
| Pushpin Map: | India Bihar |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Bihar, India |
| Coordinates: | 26.2361°N 84.2481°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Type2: | District |
| Subdivision Name1: | Bihar |
| Subdivision Name2: | Siwan |
| Unit Pref: | Metric |
| Population Total: | 138078 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Siwan |
| Demographics1 Info1: | Bhojpuri, Hindi |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Ziradei |
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.
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.[1]
As per 2001 census, Ziradei block had a population of 138,078.