Pence, who will be renominated as Trump's running mate after on-and-off speculation that he would be dropped from the ticket, is the highest ranking official to address the four-day convention.
The announcement comes after the U.S. Government Accountability Office (GAO) found earlier this month that Wolf's acting appointment did not follow processes.
Republicans had vowed to offer an inspiring, positive message in contrast to what they characterized as a dark and gloomy Democratic convention last week.