| Ketar | |
| Settlement Type: | Block |
| Pushpin Map: | India Jharkhand#India3 |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Jharkhand, India |
| Coordinates: | 24.47°N 83.55°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Jharkhand |
| Subdivision Type2: | District |
| Subdivision Name2: | Garhwa |
| Subdivision Type3: | Block |
| Subdivision Name3: | Ketar |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Bhojpuri, Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 822124 |
| Registration Plate: | JH |
Ketar is one of the administrative blocks of Garhwa district, Jharkhand state, India.
Ketar a Taluka/Block, is located 61 km from Garhwa. Ketar is located near sone river.
Languages spoken here include Asuri, and Bhojpuri.