John Lange

John Lange may refer to:


 * John Lange, a pen name of Michael Crichton
 * John E. Lange, US Ambassador
 * Johnny Lange, American songwriter, author and publisher
 * John Frederick Lange, Jr, American author of the Gor novel series under the pen name John Norman
 * Robert John "Mutt" Lange, South African record producer and songwriter
 * Johann Peter Lange, a German Calvinist theologian and Bible commentator