The star, born Abel Tesfaye in Canada, is the son of Ethiopian immigrants.
"My heart breaks for my people of Ethiopia as innocent civilians ranging from small children to the elderly are being senselessly murdered," he said.
Fighting between the Ethiopian army and the Tigray People's Liberation Front (TPLF) began in November and has left millions of people homeless.
The fighting started when Prime Minister Abiy Ahmed sent forces to the Tigray region, after accusing the TPLF of attacking a government military base.
