Rishi Sunak won 101 votes, followed by Trade Minister Penny Mordant with 83 votes and Foreign Affairs Minister Liz Truss with 64 votes.
After retaining his leadership, Sunak thanked his supporters and said he was ready to serve the nation.
“Together we can restore trust, rebuild our economy and reunite the country,” Sunak wrote on Twitter.
Former Equality Minister Cammy Banedoch won 49 votes, while Foreign Affairs Committee Chairman Tom Tugendat received 32 votes.
State prosecutor Suela Braverman was eliminated from the “race”, who failed to reach the threshold of 30 votes in the second round – she received 27 of them.