Many left their normal school uniforms at home on Thursday, March 6 and instead dressed up for the day as characters from their favourite books.
Photographer Tony Hendron took these great pictures when he popped into St John The Baptist Primary School / Bunscoil Eoin Baiste, Ballyoran Primary School, Hart Memorial Primary School and Millington Primary School.
We also asked our readers to share photos of their children dressed up in their fun costumes and we were delighted with the response. Thanks to all who shared their pictures with us.
9. World Book Day
Enjoying the fun on World Book Day at Millington Primary School are P2 pupils and staff from left, Victoria Morison, P2 teacher, Jenna Whiteman, classroom assistant, and Conor McCrea, classroom assistant. PT09-219. Photo: TONY HENDRON
10. World Book Day
P6 pupils and staff of Millington Primary School looking the part on World Book Day. PT09-222. Photo: TONY HENDRON
11. World Book Day
P1 pupils and staff at Millington Primary School enjoying the atmosphere on World Book Day. Included are staff from left, Rachel Brownlee and Rebecc McKnight, teachers, and Grace Ogibly and Leah Graham, SRC students. PT09-220. Photo: TONY HENDRON
12. World Book Day
P5 pupils and staff at Millington Primary School dressed up for the occasion on World Book Day. PT09-221. Photo: TONY HENDRON