Scotland’s First Minister took to social media to salute the 40-year-old leader, who has seen her popularity surge during the coronavirus crisis.
The Scottish premier also quoted words from Ms Ardern’s victory speech, suggesting Scotland could learn from New Zealand.
“Congratulations on your resounding re-election,” she tweeted.
“These words resonate and perhaps they hold a lesson for Scotland too - ‘As a nation, we can listen, we can debate… we are too small to lose sight of other people’s perspective.’”
Ms Ardern's successful handling of the coronavirus crisis has been credited for winning the election for the Labour Party.
Her government has focused particularly on the housing crisis in New Zealand, child poverty and social inequality since coming into power in 2017.
She led the country through the aftermath of the Christchurch mosque shootings in March 2019, rapidly introducing strict gun laws in response.
Throughout 2020 she has steered the country’s response to the Covid-19 pandemic.
The leader was standing against Judith Collins of the National Party, who conceded defeat as early results showed Ms Ardern’s party on track to win almost 50 per cent of the vote.
Ms Ardern’s Labour Party is projected to win 64 seats - enough for an outright majority.
No party in New Zealand has managed to do so since the country introduced a voting system known as mixed member proportional representation (MMP) in 1996.
Before the vote, experts were doubtful the Labour Party could win such a majority.