Brynlea Stocks will contest the Central/Ōhoko constituency, Chrys Horn South/Ōwhanga, Joe Davies East/Ōrei, and seeking re-election for West/Ōpuna is Craig Pauling.
Stocks is a consents planner with ECan and has been a resource management officer in compliance monitoring.
She said she would resign from ECan if elected to become a full-time regional councillor.
"I am wanting to represent young people who are concerned about what the future holds for them," said Stocks
"The outcome of the policies and plans that are written today create the kind of future we will inherit."
Horn worked for nine years in conservation, agriculture and tourism before completing a PhD at Lincoln University.
She has worked with science teams and communities on issues such as water quality, catchment management, climate change, eco-tourism and pest control.
"I’m running to ensure a steady improvement to our water and local environments, and to increase the use of our public transport system."
Davies, a self-employed digital designer, was a former Hagley-Ferrymead Community Board member and has qualifications in health sciences and technology.
"I will place the preservation and enhancement of our natural and landscaped environments at the forefront of my decision-making," Davies said.
"We need to say yes to modern public transport and light rail across the plains and no to water bottling and untransparent decision making."
Pauling has tribal affiliations to Ngāi Tahu and Ngāti Mutunga.
He holds a degree in environmental management, and post-graduate qualifications in social science and ecology, as well as being a qualified RMA hearings commissioner.
"I am a father and am compelled to help protect our unique natural and cultural heritage to provide a secure future for our children," Pauling said.
"This requires us to continue to address the state of our waterways and biodiversity, and face up to the challenges of a changing climate through mitigation and adaptation."
