| Kajalgaon | |
| Native Name Lang: | as |
| Other Name: | Kajalgaon Town |
| Settlement Type: | Town |
| Pushpin Map: | India Assam#India |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Assam, India |
| Coordinates: | 26.4742°N 90.5644°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Assam |
| Subdivision Type2: | District |
| Subdivision Name2: | Chirang |
| Governing Body: | Kajalgaon Municipal Board |
| Unit Pref: | Metric |
| Area Footnotes: | 222.98 hectares |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | [Assamese, Bodo] |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Registration Plate: | AS-26 |
| Iso Code: | IN-AS |
Kajalgaon is a small town and the district headquarters of Chirang district in the Bodoland Territorial Region (BTR) of Assam. The town is created from the continuous urban area of the Bongaigaon urban agglomeration.