Liddel or Lidel may refer to:
People Andreas Lidel (1740s–1780s), composer and virtuoso performer Darren Liddel (born 1971), weightlifting competitor for New Zealand Dick Liddil (1852–1901), American outlaw, member of the James-Younger Gang Duncan Liddel (1561–1613), Scottish mathematician, physician and astronomer
Places Liddel Castle, ruined castle in Liddesdale, Roxburghshire in the Scottish Borders area of Scotland Liddel Strength, ancient monument near Carwinley, Cumbria, in northwest England Liddel Water, river running through southern Scotland and northern England
See also Liddell Liddesdale, valley of Liddel Water Lidl