Hiroshima Dreamination (ひろしまドリミネーション) is a winter festival of electric light held in Hiroshima, Japan since 2002.

"Dreamination" is a composite word coined from "dream" and "illumination".

The festival is hosted by the Light-up Hiroshima Project Executive Committee and supported by all public and private broadcasters in Hiroshima as a winter night attraction in for residents and visitors.

Every street in downtown Hiroshima, together with the town squares are illuminated with a million and a half LED lights.