Prison art tutor, Carol Gash, said the exhibition featured a range of works from paintings, to pencil works, to one-of-a-kind carvings.
She said the works were of a high standard and illustrated Maori mythology, portraiture and New Zealand landscapes.
"People who view the exhibition will be pleasantly surprised at the creativity and resourcefulness on display," she said.
The exhibition also includes two large murals painted by women prisoners from Arohata Prison just outside Wellington.
The murals are approximately 2.85m wide and 1.8m high and this is the first time they will be on public display.
The exhibition is curated by Sarjeant Gallery curator Greg Donson and runs from today to June 30.
Entry is free and most of the artworks are available for purchase, with funds raised going to the Whanganui Restorative Justice Trust.
Exhibition details
What: Aotearoa: Our Land, Our People Prisoner Art Exhibition
When: Monday 9 June - Monday 30 June 2014
Where: Davis Central City Library, Campbell Street, Queens Park, Wanganui