5 Presidents had never been elected to public office before becoming President: Zachary Taylor, Ulysses S. Grant, Herbert Hoover, Dwight D. Eisenhower, and president-elect Donald Trump. However, Trump is the only individual to be elected president without any prior political or military experience.
ttps://en.wikipedia.org/wiki/List_of_Presidents_of_the_United_States_by_previous_experience