| Osakanh Thammatheva | |
| Native Name Lang: | lo |
| Office: | Head of the LPRP Central Committee Propaganda and Training Board |
| 1Blankname: | General Secretary |
| 1Namedata: | Khamtai Siphandone Kaysone Phomvihane |
| Term Start: | 1990 |
| Term End: | 2004 |
| Predecessor: | Maichantan Sengmani |
| Successor: | Mounkeo Oraboun |
| Birth Date: | 13 March 1936 |
| Death Place: | Vientiane, Laos |
| Occupation: | Politician |
| Party: | Lao People's Revolutionary Party |
Osakanh Thammatheva (Lao: ໂອສະກັນ ທໍາມະເທວາ; born 13 March 1936 – died 31 October 2004) was a Laotian politician and member of the Lao People's Revolutionary Party. He was born in Voeunsai, Rattanakhiri province, Cambodia.
He was elected to the LPRP Central Committee at the 3rd National Congress and retained a seat on the body until his death on 31 October 2004.
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