Deiniol
- Gender
- Boy
- Say it
- DAY-nyol
- Origin
- Welsh
Deiniol is a boys' name of Welsh origin. Too few babies were given it in the latest year to rank.
What does Deiniol mean?
Welsh: Welsh name of a 6th-century saint
The name of Saint Deiniol, the 6th-century founder of the monastery and bishopric at Bangor in Gwynedd.
Is Deiniol a girl's or a boy's name?
Deiniol is a boys' name.
How popular is Deiniol in the UK?
No boys in the UK were given it in 2025, or too few to be listed. Its busiest year was 2001, with 7 boys.
Half of all the boys named Deiniol in the UK since 1996 were born between 2000 and 2012, the years shaded on the chart below.
Deiniol in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2018 | 3 | #4,959 |
| 2017 | 0 | – |
| 2016 | 3 | #5,015 |
| 2015 | 3 | #4,955 |
| 2014 | 5 | #3,529 |
| 2013 | 0 | – |
| 2012 | 3 | #4,999 |
| 2011 | 3 | #4,837 |
| 2010 | 0 | – |
| 2009 | 0 | – |
| 2008 | 0 | – |
| 2007 | 0 | – |
| 2006 | 6 | #2,645 |
| 2005 | 4 | #3,330 |
| 2004 | 0 | – |
| 2003 | 4 | #2,990 |
| 2002 | 0 | – |
| 2001 | 7 | #1,833 |
| 2000 | 4 | #2,612 |
| 1999 | 4 | #2,513 |
| 1998 | 4 | #2,531 |
| 1997 | 4 | #2,438 |
Names like Deiniol
Names given in the same years and the same naming tradition, with a similar sound.
Dylan, Daniel, Declan, David, Owen, Ryan, Samuel, Joseph, Michael, Morgan, Thomas, Connor
More Welsh names
Winnie, Maddox, Idris, Reese, Bowen, Griffin, Rhys, Gavin, Reece, Nia, Seren, Gwendolyn, Winifred, Meredith, Brynn, Eira
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland) and Baby names (Northern Ireland Statistics and Research Agency). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Deiniol: name meaning, origin and popularity”, https://www.nameling.co.uk/names/deiniol, updated 20 October 2026.