"On May 25 of this year, another 303 Russian servicemen were returned from territory controlled by the Kiev regime," the statement said.
In exchange, 303 Ukrainian Armed Forces prisoners of war were handed over.
"At present, the Russian servicemen are on the territory of the Republic of Belarus, where they are receiving the necessary psychological and medical assistance," the Russian ministry reported.
All Russian servicemen and civilians will be transported to Russia for treatment and rehabilitation in medical facilities of the Russian Defense Ministry, it added.
This marks the final phase of a major 1000-for-1000 prisoner swap agreed upon during Istanbul talks on May 16.