The Fill Your Space group led the St Patrick's Day parade in Derry.
The McIlreavy and Liken families travelled from Portrush to enjoy the festivities in Derry.
Helena McLaughlin and Margaret and Megan Kelly dressed in green for St Patrick's Day.
Sarah Lindsay and Emma Corrigan went for the leprechaun look for St Patrick's Day.
Stalls in Waterloo Place sold everything needed to celebrate St Patrick's Day in style.
Local children dressed in colourful costumes to take part in the St Patrick's Day parade.
Four-year-old Nathan Kyle enjoys a St Patrick's Day ice cream at the parade in Derry.
Members of the Pilot's Row branch of Comhaltas Ceoltóirí Éireann entertained the crowd with traditional music.
Crowds dressed in green watch the St Patrick's Day traditional music concert.
In Strabane, St Patrick himself led the parade through the town centre.