"Governor Christie is an extremely knowledgeable and loyal person with the tools and resources to put together an unparalleled Transition Team, one that will be prepared to take over the White House when we win in November," the presumptive nominee said in a statement. "I am grateful to Governor Christie for his contributions to this movement."
Said Christie, who backed Trump after dropping his own bid for the GOP presidential nomination: "I am honored by the confidence being placed in me by Mr. Trump and look forward to putting together a first rate team to assemble an administration to help best serve the President-elect and the nation."
Christie endorsed the New York businessman in February, making him an early backer of Trump. At the time, he said that Trump is "the clear standout, and the person who will do exactly what needs to be done to make America a leader around the world again."
Christie ended his own campaign following a disappointing showing in the New Hampshire primary.
— The Associated Press contributed to this report.