Llywelyn
- Alan Curbishley
- Blue Bloods (novel)
- Cormac McCarthy
- Dafydd ap Llewelyn (disambiguation)
- Daniel Maslany
- Doug Llewelyn
- Emily St. John Mandel
- Fluellen
- Henry V (play)
- John Dillwyn Llewelyn
- Lew Christensen
- Llewellin
- Llewellyn (surname)
- Llewellyn Atherley-Jones
- Llewellyn Chilson
- Llewellyn Edwards
- Llewellyn F. Haskell
- Llewellyn Garrish Estes
- Llewellyn H. Rockwell, Jr.
- Llewellyn Henry Gwynne
- Llewellyn Herbert
- Llewellyn Ivor Price
- Llewellyn John Montfort Bebb
- Llewellyn L. Callaway
- Llewellyn Powers
- Llewellyn Starks
- Llewellyn Thomas
- Llewellyn Thomas Smith
- Llewellyn Thompson
- Llewellyn Turner
- Llewellyn Vaughan-Lee
- Llewellyn Woodward
- Llewellyn Xavier
- Llewelyn Alberic Emilius Price-Davies
- Llewelyn Kenrick
- Llewelyn Lewellin
- Llewelyn Powys
- Llewelyn Williams (disambiguation)
- Llewelyn Wyn Griffith
- Llywelyn (name)
- Llywelyn (surname)
- Llywelyn Aurdorchog
- Llywelyn Bren
- Llywelyn Fawr ap Maredudd
- Llywelyn Goch ap Meurig Hen
- Llywelyn Siôn
- Llywelyn Williams
- Llywelyn ab y Moel
- Llywelyn ap Dafydd
- Llywelyn ap Gruffudd
- Llywelyn ap Gruffydd Fychan
- Llywelyn ap Maredudd ap Llywelyn ap Maredudd ap Cynan
- Llywelyn ap Merfyn
- Llywelyn ap Seisyll
- Llywelyn the Great
- Louie Duck
- Margaret Llewelyn Davies
- Melissa De La Cruz
- Murdoch Mysteries
- No Country for Old Men
- No Country for Old Men (novel)
- Odd Thomas (novel)
- Ozy and Millie
- Royce R. Lewellen
- Sea of Tranquility (novel)
- Sufi
- The People's Court
- Theodora Llewelyn Davies
- Valkyrie Profile
- W. Llewelyn Williams
- Welsh language