Oserheimen Aigberaodion Osunbor[1] (born 5 October 1951) is a Nigerian lawyer and politician who served as the governor of Edo State from 2007 to 2008.

He served as the senator representing the Edo Central senatorial district from the start of the fourth republic in 1999 to 2007.

[2] After taking his seat in the Senate in June 1999 he was appointed to committees on Rules & Procedures, Ethics, Judiciary, Water Resources and Government Affairs (Chairman).

[citation needed] Osunbor was elected governor of Edo State in April 2007 on the Peoples Democratic Party (PDP) platform.

[5] On 20 March 2008, the Edo State Governorship Election Tribunal declared that Osunbor's election was invalid, and asked the Independent National Electoral Commission (INEC) to withdraw his certificate and declare Adams Oshiomhole of the Action Congress (AC) party the winner.