| Chamaraja Wodeyar VIII | |
| Succession: | 20th Maharaja of Mysore |
| Reign: | 2 August 1770–6 September 1776 |
| Coronation: | Seringapatam, 16 August 1770 |
| Birth Date: | 27 August 1759 |
| Death Date: | 6 September 1776 |
| Death Place: | Royal Palace, Seringapatam |
| Predecessor: | Nanjaraja Wodeyar (eldest brother) |
| Successor: | Chamaraja Wodeyar IX (youngest brother) |
| Royal House: | Wodeyar |
| Dynasty: | Wodeyar dynasty |
| Father: | Krishnaraja Wodeyar II |
| Mother: | Devaja Ammani Avaru |
| Religion: | Hinduism |
Chamaraja Wodeyar VIII (Bettada Chamaraja Wodeyar VIII Bahadur; 27 August 1759 – 6 September 1776.) was the twentieth maharaja of the Kingdom of Mysore from 1770 for six years until 1776. He reigned under the powerful control of Sarvadhikari Hyder Ali.
He was the second son of Krishnaraja Wodeyar II and succeeded on the death of his elder brother Nanjaraja Wodeyar on 2 August 1770.