And helping people celebrate this saint is Peeks, the party people with all the things you need to make your competitors green with envy.
This year March 17 falls on a Sunday and the day before is the last round of the Six Nations games, with Wales hosting last year’s winners Ireland.
So there is every reason to make a weekend out of St Patrick’s Day.
And Peeks has all you need from flags, balloons and bunting to hilarious leprechaun costumes, hats and beer mats.
There are table decorations, photo-booth props, door covers, scene setters and shamrocks.
Or you could just order a St Patrick’s party pack which has everything you need.