| Ida Bagus Mantra | |
| Order: | 5th |
| Office: | Governor of Bali |
| Term Start: | 1978 |
| Term End: | 1988 |
| President: | Suharto |
| Predecessor: | Sukarmen |
| Successor: | Ida Bagus Oka |
| Birth Date: | 8 May 1928 |
| Birth Place: | Badung, Bali, Dutch East Indies |
| Death Place: | Bali, Indonesia |
| Nationality: | Indonesian |
| Children: | Ida Bagus Rai Mantra |
Ida Bagus Mantra (8 May 1928 – 10 July 1995) was the Governor of Bali from 1978 to 1988. Ida Bagus Mantra replaced Ida Bagus Oka as governor of Bali. He later served as Indonesia's ambassador to India. He also served as a member of the House of Representatives in 1968.
He died on 10 July 1995, of kidney disease.