Schoolchildren got into the spirit of the occasion in a number of creative ways, with many taking the opportunity to get in costume as their favourite book character.
At Victoria PS, pupils dressed up as an adjective and took to the corridor ‘catwalk’ for a word fashion show, while older children participated in a paired reading scheme with younger students.
Meanwhile, pupils at Central IPS held a sponsored read in partnership with the Cancer Fund for Children, with all children receiving a sponsorship form to help raise money for the charity.
Parents, guardians and grandparents were also invited to come into the school and read with the children in their classrooms.
Can you spot any familiar faces in our gallery below?
13. World Book Day
Mia reading in the P6 classroom at Central Integrated Primary School on World Book Day. Photo: NI World
14. World Book Day
P7 pupil Fareeha doing some reading on World Book Day at Central Integrated Primary School. Photo: NI World
15. World Book Day
Reading in the P7 classroom at Central Integrated Primary School on World Book Day. Photo: NI World
16. World Book Day
Celebrating World Book Day at Central Integrated Primary School were Justin and Noah. Photo: NI World