The Hollywood Foreign Press Association said that Dr Shaun Harper, founder of the Race and Equity Centre at the University of Southern California, would conduct a review to help develop "a comprehensive, multi-year, diversity, equity and inclusion strategy".
The HFPA said it has also retained a law firm that will develop a system "for investigating alleged violations of our ethical standards and code of conduct".
The moves follow a probe last month by the Los Angeles Times that noted there were currently no black members among the 87 foreign entertainment journalists who make up the HFPA.
The Los Angeles Times also raised long-standing ethical questions over the close relationships between the HFPA and movie studios that may influence the choice of Golden Globe nominees and winners.
The controversy overshadowed the Golden Globes ceremony in February, which is one of the major Hollywood award shows leading up to the Oscars in April.
The HFPA came under fire when the Golden Globe nominations this year failed to recognise some high-profile movies and TV shows by and about black people, including Da 5 Bloods and I May Destroy You.
The nominations did include several actors and directors of colour, and Golden Globes were awarded in February to three black actors, as well as Chinese-born director Chloe Zhao for her film Nomadland, which also won the top prize for best drama film.
The HFPA said on Tuesday that it was committed to "fostering an environment that better reflects our core values" and that "restores faith, trust and confidence in our organisation".