Olha, Manitoba is a Ukrainian community in Manitoba. It is located in the Rossburn Municipality. The few buildings in Olha are a church, a community hall, and the Olha general store. Of note in the Olha area is a mass grave where the remains of 43 Ukrainian settlers (three adults and 40 children) are buried. The settlers died during an epidemic of scarlet fever shortly after their arrival in 1899. Several monuments mark this site.