"I've admired Tony for a very long time," general manager Billy Eppler said in a statement. "As our paths have crossed over the years, Tony and I discussed the potential of working together and we're excited to finally get that opportunity. Adding his knowledge and experience will be an invaluable piece to the success and continued development of our baseball operations efforts both on and off the field."
La Russa spent the last two seasons working for the Boston Red Sox as a vice president and special assistant to the president of baseball operations. He aided the team's then-president Dave Dombrowski before the Red Sox fired Dombrowski in September. La Russa's previous front-office experience also includes four years as chief baseball officer and chief baseball analyst of the Arizona Diamondbacks.
In Anaheim, La Russa will be reunited with one of his former players in Albert Pujols. The pair spent 11 seasons together with the St. Louis Cardinals before La Russa retired and Pujols signed with the Angels following their 2011 World Series win.
The 75-year-old La Russa spent 33 seasons as a manager with the Cardinals, Chicago White Sox, and Oakland Athletics. La Russa's teams made 14 playoff appearances and won six league pennants and three World Series titles, while his 2,728 regular-season wins rank third all-time. He was elected to the Baseball Hall of Fame in 2014.
The 2020 season will mark La Russa's 59th year working in professional baseball as either a player, manager, or executive.