Obadiah Wheelock (1738 – after 1800) was a political figure in Nova Scotia. He represented Annapolis township in the Nova Scotia House of Assembly from 1770 to 1774 and from 1774 to 1776.
He was born in Mendon, Massachusetts and came to Annapolis, Nova Scotia in 1760. He was unseated for non-attendance in 1774 but elected again later that same year.