The lieutenant governor of Oklahoma is the second-highest executive official of the state government of Oklahoma. As first in the gubernatorial line of succession, the lieutenant governor becomes the new governor of Oklahoma upon the death, resignation, or removal of the governor. The lieutenant governor also serves as the president of the Oklahoma Senate, and may cast a vote to break ties in that chamber.

The government of the U.S. State of Oklahoma, established by the Oklahoma Constitution, is a republican democracy modeled after the federal government of the United States. The state government has three branches: the executive, legislative, and judicial. Through a system of separation of powers or "checks and balances," each of these branches has some authority to act on its own, some authority to regulate the other two branches, and has some of its own authority, in turn, regulated by the other branches.