People named Liddell include:
Alice Liddell, Lewis Carroll's "muse"
Andy Liddell, Scottish footballer
Anne Liddell-Grainger, mother of Ian Liddell-Grainger
Sir B. H. Liddell Hart, British military strategist
Billy Liddell, Scottish footballer
Chuck Liddell, mixed martial artist
Colin Liddell, Scottish footballer
David Liddell-Grainger, Deputy Lieutenant of Berwickshire
Emilie Autumn Liddell, American Rock/Alternative/Electronic Artist
Eric Liddell, Scottish athlete
Frank Liddell (politician), Australian politician
Frank Liddell (record producer), American record producer
Guy Liddell, British intelligence officer
Helen Liddell, British politician
Henry Liddell, Classical scholar and father of Alice Liddell
Henry Liddell, 1st Baron Ravensworth
Ian Liddell-Grainger, Member of Parliament for Bridgwater
John Aidan Liddell, Victoria Cross recipient
Patrick Liddell, Composer and video artist
Robert Liddell, English writer
Robert Liddell (Pittsburgh), Mayor of Pittsburgh, Pennsylvania
Robert Scotland Liddell, British journalist
St. John Richardson Liddell, Louisiana planter and Confederate general
Thomas Liddell, first Principal of Queen's University, Kingston, Ontario
Ian Oswald Liddell, Victoria Cross recipient