1 of 9 Tommy Griffin from Edinburgh enjoys his first St Patrick's Day in Belfast along with friends Lucille Murray and Gareth Conway from Keady, County Armagh.
2 of 9 Pauline Burns and her two children, Emma, 10, Orla, 2, and her 9-year-old niece Lauren Patterson, all from west Belfast, get into the spirit at Belfast's free open air concert.
3 of 9 Irish Guard Lance Clerkin helps the regimental mascot Donnchadh with his shamrock in Bessbrook, south Armagh.
4 of 9 Michael and Janet Walsh from the Antrim Road, Belfast, soak up the atmosphere with their sons Lee, 6, and Ryan, 4 at the Belfast festival.
5 of 9 Belfast hosted the largest parade and thousands gathered at the City Hall for a free open air concert.
6 of 9 Former Pogues singer Shane MacGowan even had a special beer holder built into his microphone stand at the Belfast concert
7 of 9 Even the dogs on the streets of Belfast find a way to celebrate St Patrick's Day with a certain sense of pride.
8 of 9 Alongside the traditional crowd pleasers, the theme of Downpatrick's parade was myths and legends
9 of 9 Amid Armagh's mardi-gras theme, these traditional "rhymers" demonstrated the ancient tradition of mumming