Valby Gasworks was a former gasworks between Vigerslev Allé og Retortvej in the Copenhagen suburb of Valby. It was one of Denmark's largest gasworks, with a total area of 270.000 m2. It produced coal gas between 1907 and 1963, and from then on was used just for gas storage.
In 1964 the works was destroyed by a powerful gas explosion, causing many injuries and serious damage to the surrounding suburb. The explosion featured in an episode of the series Danmarks katastrofer (Denmark's disasters) by DR.