| Mart Kadastik | |
| Birth Date: | 24 March 1955 |
| Birth Place: | Estonia |
| Nationality: | Estonian |
| Known For: | Editor in chief of Edasi |
| Occupation: | Executive director and chairman of the board of Eesti Meedia |
Mart Kadastik (born March 24, 1955) is an Estonian journalist, the editor in chief of Estonia's largest daily Edasi/Postimees 1977–1998, and executive director and chairman of the board of Eesti Meedia since 1998,[1] the media group in Estonia controlling about one third of the national press market.[2]