Berts bekäennelser (Swedish: Bert's confessions) is a diary novel, written by Anders Jacobsson and Sören Olsson and originally published in 1992. It tells the story of Bert Ljung from 15 January to 7 June during the calendar year he turns 15 during the spring term in the 8th grade at school in Sweden. The book uses the 1992 almanac following the Gregorian calendar, but no specific year is mentioned, and the (leap year's day isn't mentioned). Starting with this book, the chapters receive names (and not just dates), and Sonja Härdin changes writing style. Berts bekännelser finishing standard of each chapter is "Hej då – lilltå". Berts was also recorded for radio, at Unga Efter tre back in the early 1990s.