Frank Vandenbroucke (6 November 1974 – 12 October 2009) was a Belgian professional road racing cyclist. After showing promise in track and field in his adolescence, Vandenbroucke took to cycle racing in the late 1980s and developed into one of the great hopes for Belgian cycling in the 1990s, with a string of victories that included Liège–Bastogne–Liège, Grand Tour stages and Omloop Het Volk. This early success dissipated however in a series of drug problems, rows with teams and suicide attempts. Despite repeated attempts to continue his career with a string of different teams from 2000 to 2008, Vandenbroucke's drug use and unpredictability eventually led to his estrangement from the cycling world. Although Vandenbroucke claimed in an interview in 2009 to have recovered his mental health, he died of a pulmonary embolism in October 2009 at the age of 34.