Announcing that Mr Zhuravlyov would be released from custody, he said the Ukrainian would also get compensation from the Polish state.
“I am happy… it was a really very hard three weeks,” Mr Zhuravlyov’s wife, Yulianna, told the BBC in court after the judge’s verdict.
“For me, as a Ukrainian, it was very important to hear that he understands us.”
She said the family planned to stay in Poland, where they have lived since February 2022.
Earlier, she described her husband’s arrest at their home just outside Warsaw and said he denied any involvement in the sabotage.
Volodymyr Zhuravlyov is a deep-sea diver, his wife has confirmed, but she called it a hobby and said he had no military role.
He has a business in Poland installing air conditioners. Mrs Zhuravlyova could not tell the BBC exactly where her husband was when three of the four Nord Stream pipelines were blown up, because she said no-one had asked her to check.
He is not the only suspect on Germany’s list: another Ukrainian man was detained in Italy in August when he was on holiday.
Serhiy Kuznetsov was also accused of “unconstitutional sabotage” and has denied any connection to the blasts. He is currently in a high security prison in northern Italy.
A court in Bologna did rule he should be extradited to Berlin but earlier this week that verdict was annulled by the top appeals court in Rome and the case has been returned to Bologna to begin all over again.
Asked about the decision, Germany’s foreign minister said he respected the ruling and it was not the job of government to interfere with the courts.