"The international artists visiting for the street art festival are professionals with an amazing array of experiences, skills and talent," Kelly said.
"We wanted to give budding Whanganui artists the chance to learn from and be inspired by these artists to grow their own skills and abilities and continue the legacy of street art locally."
Mentoring artists include New Zealand's Elliot Francis Stewart and Gina Kiel, the Netherlands' Amok Island, UK's Hayley Welsh, Australia's Claire Foxton and Pat Perry from the US.
Applications for the programme close on Sunday, February 24 and the six successful applicants will be confirmed on February 28.
Kelly said the programme would benefit everyone involved.
"It will be a once-in-a-lifetime experience to work alongside a professional artist and we hope this grows these mentorees' skills and inspires them to continue on their creative arts journey.
"It is also really supporting town regeneration, making not-so-attractive walls and spaces become really interesting and vibrant places where people want to be."