John Rennie

John Rennie may refer to:

• John Rennie the Elder (1761–1821), engineer (factories, canals, design of London Bridge)
• Sir John Rennie the Younger (1794–1874), engineer (rail lines, completion of London Bridge)
• John Rennie (naval architect) (1842–1918), naval architect
• Sir John Rennie (MI6 officer) (1914–1981), Director of MI6
• John Rennie (editor) (born 1959), editor-in-chief of Scientific American, 1994–2009
• John Rennie (cricketer) (born 1970), Zimbabwean Test and ODI cricketer
• John Gillies Rennie (1904–1952), Quebec politician and educator

  John Rennie High School, Quebec, Canada, named for John Gillies Rennie

• John Rennie (GC) (1919–1943), British recipient of the George Cross
• John Shaw Rennie (1917–2002), Commissioner-General of UNRWA