The building was damaged in the attack, reports EU Council President António Costa.
"My thoughts are with the Ukrainian victims and also with the staff of the EU delegation, whose building was damaged in this deliberate Russian attack," he writes on X.
The EU ambassador to Ukraine, Katarina Mathernova, writes on X that the delegation's building was severely damaged by a shockwave. No personal injuries have been reported.
In pictures published by Costa and Mathernova, an office with blown-out windows and debris on the floor can be seen. Tiles have come loose from the ceiling and are hanging down.
"While the world is seeking a path to peace, Russia is responding with missiles," notes EU Foreign Minister Kaja Kallas on X.