The Adventures of Nero or Nero was a Belgian comic strip drawn by Marc Sleen and the name of its main character. The original title ranged from De Avonturen van Detectief Van Zwam in 1947 to De Avonturen van Nero en zijn Hoed in 1950, and finally De Avonturen van Nero & Co from 1951. It ran in continuous syndication until 2002. From 1947 until 1993 it was all drawn by Sleen himself. From 1992 until 2002 Dirk Stallaert took over the drawing while Sleen kept inventing the stories.

Together with Suske en Wiske and Jommeke, "Nero" is regarded as the Big Three of Flemish comics. The stories were noted for their satirical content, with references to politicians and celebrities of the day. With Nero, Marc Sleen holds the world record of issues of a comic book series title drawn by the same author. He drew The Adventures of Nero singlehandedly from 1947 to 1992 without any assistance from other artists. This feat is even more remarkable considering he also drew other comic strip series from 1947 to 1965.