Barði Jóhannsson (born 10 September 1975) is an Icelandic musician, composer, writer, TV show host (of the surrealist Icelandic TV show Konfekt), clothing designer and film director. He is mostly known for his work with the groups Bang Gang, Lady & Bird (a side project with Keren Ann) and Starwalker, a collaboration with Jean-Benoît Dunckel.

In addition to these musical outlets, Barði has been involved in a number of other audio-visual projects. Most significantly, he has written music for commercials and for the National Theatre of Iceland and Centre Dramatique d'Orleans (Museum of the Sea by Marie Darrieussecq). He has appeared at the Festival Aix En Provence and he co-produced and co-directed short films.