Williams replaces Davey Johnson, who retired at the end of the regular season. Williams spent the last three years as the Arizona Diamondbacks' third base coach.
“I am thrilled to welcome Matt to our organization and am confident he is the best choice to lead the Nationals at this time,” Nationals general manager Mike Rizzo said. “He is exceptionally prepared for the task. Matt came into the interview process already possessing an extensive knowledge of our organization: our roster, our Minor League system – and our fan base.
“He has genuinely creative, unique ideas on how to increase performance, and on cultivating leadership and team unity.”
LEMIRE: Red Sox, Cardinals both well positioned for future Series success Williams was a .268 hitter and hit 378 home runs in his career. He also won four Gold Glove Awards and four Silver Slugger Awards as a third baseman.