The Bert Diaries are a series of novels written in the form of a diary. They are by Swedish writers Anders Jacobsson and Sören Olsson. The main character is a teenager named Bert Ljung. Ljung lives in Öreskoga, a fictional town in Sweden, in the late 1980s and early 1990s. The first book was published in 1987. Bert and his friends also have a pop/rock band, the "Heman Hunters".