Dream 15 was a mixed martial arts event held by Fighting and Entertainment Group's mixed martial arts promotion Dream.

[1] The event aired live in North America on HDNet.

A Light Heavyweight Grand Prix was originally expected to start at Dream 14, with an eight-man tournament.

However, Dream 15 hosted the opening round of the Grand Prix, with only a four-man tournament.

[3] After Jake O'Brien failed to make weight, his Light Heavyweight Grand Prix Opening Round bout against Gegard Mousasi was made into a 212-lbs catchweight bout.