Boyle joined the company as chief operating officer in July after 12 years at Carlson Wagonlit Travel.
He will take up his new role in January, replacing James Parkhouse, who has been promoted to executive director of Capita's workplace services division, which includes Capita Travel and Events.
Boyle's aim is to build on the company’s success following the recent integration of Capita Business Travel, BSI, Expotel and Venues Events Management.
Boyle said: "Capita Travel and Events brings together the specialist management of travel, accommodation, meetings and events procurement, all underpinned by integrated online technology, expertise and security of scale. Whether customers choose rail and hotels, travel and meetings or any combination, we provide trusted and proven knowledge through one coherent solution.
"Our business reflects a changing approach to the procurement of travel and meetings, and procurement managers are increasingly responsible for both categories."