Albert Cornelis "Appie" Baantjer (1923–2010) was a Dutch author of detective fiction and police officer. He is mainly known for his series of detective novels revolving around police inspector De Cock and his side-kick, sergeant Vledder. The novels have spin-offs in the form of a motion picture and a long-running TV-series entitled 'Baantjer' - named after the author, rather than the main character(s).