The Jewish Communist Union in Ukraine (Yiddish: אידישער קאמוניסטישער פארבאנד אויף אוקראינע), also known as Komfarband (קאמפארבאנד), was a Jewish communist political party in Ukraine. Komfarband was formed on May 22, 1919, through the merger of the Jewish Communist Labour Bund (Kombund) and the United Jewish Communist Party (Komfareynikte).The Komfarband had some 4,000 members. Moisei Rafes and Mikhail Levitan were key leaders of Komfarband. The newspaper Komunistishe fon was the organ of Komfarband. Komfarband had three members in the All-Ukrainian Central Executive Committee of Soviets.