Family name Llewellyn-Jones (Llewellyn-Jones 
) , throughout the world, is a rare cognomen. The last name Llewellyn-Jones is habitual in the United Kingdom, where it is a rare surname, Australia, and Chile, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in the United Kingdom, Australia, and the United States. Parts of the name also exists independently as a last name Llewellyn, and a last name Jones.
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| Llewellyn-Jones | Chile, United Kingdom, Peru, United States, Australia |
| frederick llewellyn-jones British politician (1866-1941), GB (b. 1866) |
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| james rushton john llewellyn-jones (b. 1894) |
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| derek llewellyn-jones Australian gynaecologist and author (1923-1997) (b. 1923) |
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| tony llewellyn-jones Australian actor, AU (b. 1949) |
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| benedict llewellyn-jones British diplomat (-1976). High Commissioner to Rwanda and Ambassador to Burundi 2011-2014, GB (b. 1976) |
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| lloyd llewellyn-jones Professor of Ancient History at Cardiff University |
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| richard george llewellyn-jones Peerage person ID=508557 |
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| david thomas llewellyn-jones Ph.D. Massachusetts Institute of Technology 1967 |
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| rosie llewellyn-jones historians, GB |
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Mr, Katie, Paula, Peter, Rosie, Rhoss, David, Diego, Gemma, Laura, Lorna, James, Julia, Erica, Henry, Helen, Alison, Ashley, Celine, Bethan, Phoebe, Rachel, Cathy, Carol, Chris, Susie, Ms, Jo, Ben, Peg, Liz, Tim, Huw, Mary, Mark, Mike, Robert, Adam, Dawn, Glyn, Lynn, Jane, Josh, John, Tony, Hugh, Sarah, Simon, Paty, and Daniel