In the church, Putin lit candles and kissed the icon, decorated with flowers, then stood up with the rest of the parishioners.
RT is broadcasting live.
Last year, Putin celebrated Christmas at the Transfiguration Cathedral in St. Petersburg.
The head of state was there on Christmas night in 2019.
In September 2016, Putin, together with Dmitry Medvedev, who was then prime minister, attended the Church of St. Nicholas on Lipno.