A source tells Access that Tom will be out of town. It's the second year in a row the star has missed the ceremony – in 2008, he spent the day with his son, Connor, at the NASCAR Nextel Cup Series Auto Club 500 racing event.
Though he won't be attending, Tom has someone to root for on Sunday – "Tropic Thunder" co-star Robert Downey Jr., who is nominated for Best Supporting Actor for the ensemble comedy.
Both Cruise and Downey were nominated for Golden Globes for the film.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: Tom Cruise & Katie Holmes
PLAY IT NOW: Access Extended: Tom Cruise Talks 'Valkyrie'
PLAY IT NOW: Katie Holmes' Final Night On Broadway (Jan. 11, 2009)