Leo Thomas, 85, of Parkston, SD, died unexpectedly Monday, February 28, 2022, surrounded by his family at Avera Heart Hospital in Sioux Falls. Funeral services will be 10:30 AM Monday, March 7, at Parkston Congregational Church. Burial will be at Parkston Protestant Cemetery. Visitation will be from 3-5:00 PM Sunday, March 6 at the church. Arrangements by Bittner Funeral Chapel.