The Best of Both Worlds is the second greatest hits album by American rock band Van Halen, released on July 20, 2004, on Warner Bros.

The compilation features material recorded with lead vocalists David Lee Roth and Sammy Hagar, but omits Gary Cherone's three-year tenure with the band.

It is the last Van Halen album to feature contributions from Michael Anthony and Hagar.

The album was released in promotion of the new reunion tour featuring Hagar returning as lead singer.

Michael Anthony did not play bass guitar for the three new songs, although he did provide backing vocals for them.