Dekalog (pronounced [dɛˈkalɔg], also known as Dekalog: The Ten Commandments and The Decalogue) is a 1989 Polish drama television miniseries directed by Krzysztof Kieślowski and co-written by Kieślowski with Krzysztof Piesiewicz, with music by Zbigniew Preisner. It consists of ten one-hour films, inspired by the decalogue of the Ten Commandments. Each short film explores characters facing one or several moral or ethical dilemmas as they live in an austere housing project in 1980s Poland. The entire series was exhibited at the 46th Venice International Film Festival.

The series, Kieślowski's most acclaimed work, was said in 2002 to be "the best dramatic work ever done specifically for television" and has won numerous international awards, though it was not widely released outside Europe until the late 1990s. It is one of fifteen films listed in the category "Values" on the Vatican film list. In 1991, filmmaker Stanley Kubrick wrote an admiring foreword to the published screenplay. According to him, Dekalog is the only masterpiece he could ever think of.