"Vira Ghyrytch died as a result of a Russian missile strike on the 25-storey residential building where she lived, near the city center, said in a statement on its website Radio Liberty, media financed by the UNITED STATES.
His body was discovered under the rubble on Friday, the statement said.
Ms Ghyrytch had worked for Radio Liberty's Kyiv office since 2018, after collaborating with several Ukrainian TV channels.
The mayor of the capital Vitali Klitschko on Friday denounced the "right to kill" that, according to him, Russia has granted itself.
"We fight for freedom of expression," he wrote on Twitter.
He had said earlier that at least one person had been killed by this strike, the first bombardment in kyiv since April 17, without revealing the identity of the victim.
Rescuers "found a body" while clearing debris at the affected site, he said.
AFP saw rescuers pull out a bag containing a corpse from the rubble.
Four wounded were hospitalized, he added in a separate message, adding that a total of more than 100 kyiv residents including four children had been killed and 435 injured since the start of the Russian invasion on February 24.
Russia has confirmed a strike with "long-range high-precision weapons", claiming to have targeted "the workshops of the space company" Artem in the Ukrainian capital.
At the end of March, a Russian journalist, Oksana Baoulina, was killed in the explosion of a rocket while she was filming the damage caused by a previous strike in kyiv on a shopping center in the central district of Podil.
According to the Committee to Protect Journalists, at least seven media workers have been killed in Ukraine since the start of the Russian offensive.
© 2022 AFP