Vice President–elect of the United States
The vice president-elect of the United States is the candidate who has been elected to the office of vice president of the United States in a United States presidential election, but is awaiting inauguration to assume office. There is no explicit indication in the U.S. Constitution as to when that person actually becomes vice president-elect, although the Twentieth Amendment uses the term "vice president-elect", thus giving the term constitutional justification.
Source: Wikipedia — Vice President–elect of the United States (CC BY-SA 4.0)