Many ancient Celtic symbols and their meanings, rooted in pre-Christian and early Gaelic traditions, have shaped Irish and Scottish culture for thousands of years.
Not to be confused with Irish symbols (e.g the Claddagh), Celtic symbols, like the Celtic Knots, were brought to Ireland by the Celts thousands of years ago.
Below, you’ll find the most prominent Celtic designs and patterns, each with meanings tied to strength, family, longevity, and wisdom.
Celtic symbols and meanings explained
Some of the most notable Irish Celtic symbols include the Triskelion, the Celtic Cross, the Triquetra, the Celtic Tree of Life and the numerous Celtic Knots, including the Dara Knot, a symbol of strength.
Many were handed down over time and their meanings were never recorded in writing. However, most of the symbols have been interpreted over the years.
There is a common theme of love, loyalty, strength, unity and religious belief in Celtic symbolism. Learn about each of the ancient Celtic designs and their significance below.
1. The Celtic Tree of Life
The intricately interwoven branches and roots of the Celtic Tree of Life (Crann Bethadh in Irish) form a strong and earthy Celtic symbol for strength that’s often associated with the Druids.
While the branches reach for the sky, the roots permeate the earth. For the ancient Celts, the Tree of Life symbolises balance and harmony and the close association between heaven and earth.
The Celts believed that trees were the spirits of their ancestors and that they provided a link between their earthly life and the next.
A Celtic symbol for strength, longevity and wisdom
The Celtic Tree of Life symbol represents strength, longevity and wisdom, each of which are attributes that the Celts revered.
They also believed that the tree symbolised rebirth (they would have witnessed oak trees, in particular, shed their leaves in fall and grow new ones in spring).
The symbol, which was heavily featured in Insular Art, also clearly shows the link between every root below the ground and every branch above.
2. The Celtic Cross
The Celtic Cross has been present in Ireland from the early Middle Ages and it is arguably the most recognisable of the many Celtic symbols.
Some of the earliest Celtic Cross symbols in Ireland date back to the 8th or 9th century and can be found in Monasterboice (Louth) and Kells (Meath).
Originally, these crosses would have been made from wood or metal and they were much smaller than the surviving stone carved pillars that can be found across Ireland.
In the Middle Ages, many Celtic Cross symbols were carved into rock, but over time they were developed and built as independent standing stones or monoliths.
A symbol for the seasons, the elements and life
There are many theories about the meaning of the Celtic Cross:
- Interpretation A: The four ‘arms’ represent the four cardinal directions of the earth (north, south, east, and west)
- Interpretation B: It represents the four elements: Earth, fire, water and air
- Interpretation C: The four quadrants may also represent the four seasons of the year or the four stages of the day: morning, midday, evening and midnight.
3. The Triquetra / Trinity Knot
While there is no definitive Celtic symbol for family, there are several ancient Celtic knots that represent the meanings of eternal love, strength and family unity.
The Triquetra is thought to be the oldest symbol of spirituality. It is depicted in the 9th century Book of Kells and also appears in Norwegian stave churches from the 11th century.
The elaborate Triquetra, also known as the Trinity Knot or Celtic Triangle, is one of the most beautiful Irish Celtic symbols and it shows a circle interwoven with a continuous three-pointed symbol.
The Celtic Symbol for Family
This Celtic Knot meaning is that, with no beginning and no end, it represents unity and eternal spiritual life. The symbols line interweaves through the circle in an unbroken flow.
This symbol represents the pillars of early Celtic Christian teachings of the Holy Trinity (God the Father, the Son and the Holy Spirit).
It also represents the unity of spirit when enclosed in a circle. The circle protects it, so the symbolic spirit cannot be broken.
4. The Dara Knot
Another of the better-known Irish Celtic symbols is the Dara Celtic Knot. This symbol boasts an interwoven design and a name that comes from the Irish word ‘Doire’ which means “oak tree”.
The Dara Knot is derived from this word and the symbol represents the root system of an ancient oak.
Like many Celtic knot symbols, the Dara Knot is made up of intertwined lines with no beginning or end.
There is no single design for the Dara Celtic Knot but all versions are centred on the common theme of the oak tree and its roots.
Celts and Druids revered nature, particularly ancient oak trees, and considered them sacred. They saw the oak tree as a symbol of strength, power, wisdom, and endurance.
The Celtic symbol for inner strength
The Dara Celtic knot is symbolic of the roots of the oak tree with the same symbolic source of inner strength.
Celtic knots were used for decorations, as spiritual charms, and as teaching aids.
With its association with nature and oak trees, the symbolic intricacy of the Dara Celtic Knot clearly represented strength.
5. The Triskelion
Also known as the Triskele, the Triskelion is another of the ancient Irish Celtic symbols thought to have been around during Neolithic times (that’s around 3,200 years BC!).
This spiral symbol once again reflects the Celtic belief that everything important comes in threes.
The Triskelion has three clockwise spirals connecting from a central hub, a little like the Manx three-legged symbol. In fact, the Greek word Triskele means ‘three-legged’.
Also known as the triple spiral, the Triskelion has rotational symmetry and is very common in Celtic art and architecture.
A symbol that represents progress
The Celtic spiral is one of the oldest and most primitive decorations on earth and is believed to represent the sun or ethereal radiation energy.
Celtic spirals that are clockwise are believed to have a meaning connected to harmony or earth; if they are anti-clockwise they are thought to be pagan symbols that manipulate nature.
The meaning of the Celtic Triskelion is seen as a symbol of strength and progress. As it appears to be moving, the Triskelion also represents the will to move forward and overcome adversity.
6. The Ailm
The Ailm is another of the Irish Celtic symbols for strength.
The Celtic Ailm symbol is derived from the first letter of the Ogham alphabet.
Ogham was a primitive form of written communication in Celtic history and the Ogham was originally a group of trees that were thought to dispense knowledge and wisdom.
The Ailm is thought to be a type of conifer or silver fir tree. In ancient Celtic tree lore, evergreen fir trees were associated with the healing of a person’s inner soul.
The Celtic symbol for inner strength
Trees are the most accurate Celtic symbol for strength – the likes of an oak can survive and grow in difficult circumstances and can ‘live’ for hundreds of years.
The Ailm represents strength, endurance, and resilience as well as healing, purification, health, and fertility.
The Ailm tends to be one of the most popular Celtic signs used to represent inner strength and you’ll often see Celtic God and Goddesses depicted with tree-related symbols.
7. Serch Bythol
Although less well known than some other ancient Celtic symbols, the Serch Bythol is significant.
It also shows the early Celts were deeply in touch with their emotions and relationships.
The Serch Bythol symbol is made from two Celtic knots / triskeles to symbolize the everlasting love between two people, which is why it’s one of the more popular Celtic friendship symbols.
The two defined yet closely intertwined parts represent two people joined together forever in body, mind, and spirit.
The Celtic symbol for everlasting love
This symbol is believed to represent eternal love and the side-by-side design creates an endless interconnected flow of lines without end.
The unification of the symmetrical left and right halves signifies the bringing together of body, mind and spirit with the central circle representing the eternal love which binds them together.
You’ll often see some of the Celtic mythology creatures with versions of this Celtic symbol on their armour.
8. The Celtic Motherhood Knot
Celtic knots, called Icovellavna, include many knots used for decoration in the Celtic style of Insular Art.
The elaborate Celtic Motherhood Knot symbolizes the bond between mother and child or, in Christianity, the Madonna and Child.
The meaning of the Celtic Motherhood Knot is one of enduring love between a mother and child, faith in God and the Celtic heritage.
Do note that while many design variations represent specific family relationships, several are modern inventions, such as:
- The Celtic symbol for mother and son
- The Celtic mother daughter knot
- The Celtic symbol for sisterhood
- The Celtic symbol for brothers
A symbol of enduring love
Whatever your personal faith and beliefs may be, this Celtic symbol depicts an unbreakable, never-ending bond of love and life.
Traditionally, the Celtic Motherhood Knot consists of two hearts interlinked with no beginning or end.
One heart is lower than the first and children are often denoted by a dot, heart or another symbol inside or outside the heart design. As the family grows, more symbols can be added to represent each child.
9. Ogham

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Ogham is a collection of Gaelic symbols that formed an alphabet. It was an early Irish writing system that was used by the Celts in Ireland and parts of Britain.
Carved into stone pillars, it often marked graves or boundaries, with each letter symbolically tied to a tree or plant.
Unlike the more expansive traditions of the European Celts, this script remained distinctly rooted in Gaelic culture.
10. The Irish Harp
The first of the modern Celtic signs in this guide is the Harp. The Irish Harp is the national emblem of Ireland and is still widely used today.
Look for it on Irish Euro coins as well as on the label of every can and bottle of Guinness.
The harp symbol embodies the spirit and identity of the Irish people and it, alongside the Irish flag, stands as a powerful emblem of Ireland’s rich heritage and national pride
In fact, the harp was so revered that the British banned all harps (and harpists!) in the 16th century in an effort to break the symbolic tie.
11. The Shamrock
The Shamrock is another of the many Irish symbols that tends to be mistaken for one of the ancient Celtic symbols.
This tiny bright green three-leafed plant grows all over Ireland and beyond, and it thrives in cool damp climates.
If you find a clover with four separate leaves it’s said to be lucky (read more about the luck of the Irish). It is the national flower of Ireland and its symbolism is deeply rooted in the past.
The shamrock is believed to have been an important Druid symbol. Druids are said to have felt that the three heart-shaped leaves represented the triad.
According to legend, St Patrick used the trefoil leaves to explain the unity of the Holy Trinity – three parts yet one whole – to the pagans during his Christian teachings.
12. The Claddagh ring
When it comes to Celtic symbols for love, one design tends to (incorrectly) pop up time and time again, despite clear evidence of its origin.
I’m talking, of course, about the mighty Claddagh. Now, don’t get me wrong, the Claddagh is a beautiful Irish symbol, but it has nothing to do with the Celts.
The Claddagh symbol originated in County Galway in a little fishing village of the very same name.
The Celtic symbol for love
Claddagh rings are widely exchanged in Ireland and elsewhere as a symbol of loyalty and unity.
The word Claddagh is the name of the coastal village where the design was invented by Richard Joyce.
The Claddagh ring is often used as a wedding ring and tradition says that you should never buy a Claddagh for yourself; it should be given as a gift.
13. The Celtic symbol for new beginnings
Despite what you find online, there is no such thing as a Celtic symbol for new beginnings; it, along with many Celtic patterns you see online, is entirely made up.
Someone invented a design, posted it online and now people believe that it’s one of the ancient Celtic symbols.
The most likely explanation for this Celtic symbol is that it is one of several ‘Zibu’ symbols created by an artist (Zibu) who claims they were given the symbols by the angels.
The history of Celtic symbols
Celtic designs arrived in Ireland with the Celts. The Celts were an indigenous race that lived in groups across Northern Europe from pre-500BC to the Medieval Period.
These ancient people lived in small tribal communities and, despite being widely scattered, they spoke similar Celtic languages and had many common cultural symbols.
One of the groups among the ancient Celts were the Druids. Druids were among the high-ranking professional, religious and law-keeping members of Celtic culture.
Consequently, Druid symbols have a close association and overlap with many ancient Celtic symbols and meanings. Irish symbols, like the harp, are in no way connected to the Celts.
Explore beyond Celtic symbols and meanings
Here is some related reading now that you have a good handle on the different Celtic symbols and meanings:
- The different Celtic Gods and Goddesses
- The most powerful Celtic mythological creatures
- Who were the Celts?
Keith O’Hara has lived in Ireland for 35 years and has spent much of the last 13 creating what is now The Irish Road Trip guide. Over the years, the website has published thousands of meticulously researched Ireland travel guides, welcoming 40 million+ visitors along the way. In 2022, the Irish Road Trip team published the world’s largest collection of Irish Road Trip itineraries. Keith lives in Dublin with his dog Toby and finds writing in the 3rd person minus craic altogether.
Leah
Wednesday 25th of September 2024
Thank you for this! I read a lot of bunk online, and when I visited Ireland years ago, I asked many people about this. I got different answers, but most were online with what you wrote.
A N
Sunday 20th of March 2022
Thanks! It's nice to learn about the Celtics! So much has been lost or corrupted...
Ricky
Thursday 17th of March 2022
i love the article! I'm curious about druids. I've read about them and it says that they come from somewhere called Gaul but that's in France (I'm not sure, i can't remember if that's true or not.) was Gaul originally in ancient Ireland or was it something else?
Christine
Saturday 12th of March 2022
This was fantastic. Thanks for the education!
Lilu
Thursday 12th of August 2021
Thanks for the information, I loved it