Template:World Championships in Athletics medalists in men's 4 × 100 metres relay

Note * Indicates athletes who ran only in the preliminary round and also received medals.
 * The Nigerian team of Innocent Asonze, Francis Obikwelu, Daniel Effiong and Deji Aliu originally finished third in the 1999 World Championship, but were disqualified after Asonze was found to have used performance-enhancing drugs.
 * The United States team of Mickey Grimes, Bernard Williams, Dennis Mitchell and Tim Montgomery originally won the 2001 World Championship in a time of 37.96 seconds, but were disqualified after Montgomery admitted to drug use as a result of the BALCO scandal in 2005.
 * The British team of Christian Malcolm, Darren Campbell, Marlon Devonish and Dwain Chambers originally finished second in the 2003 World Championship, but were disqualified after Chambers was found to have used performance-enhancing drugs.