Theodor was born and raised in Baltimore. He graduated from Valparaiso University and went on to a 35-year career in process control engineering at Bethlehem Steel. He then spent more than 10 years in automotive sales at J.P. Chevrolet in Aberdeen, where his love of cars became part of his work.
He loved everything automotive, including racing. A man of Lutheran faith, he was a member of the church throughout his adult life. Above all, Theodor was devoted to his family: his wife, his son, and his grandchildren. He also treasured the friendships he built with colleagues over his long career.
Theodor was married to Judith Ann Wittmer (Shiyan) for 56 years. In addition to his wife, he is survived by his son, Theodor Michael Wittmer, and his grandchildren, Katherine Rose Wittmer and Harrison Theodor Wittmer. Also survived by extended family. He was predeceased by his parents, Walter and Rose Wittmer.
A viewing and funeral service will be held at Schimunek Funeral Home in Bel Air 610 W. MacPhail Road Bel Air, MD 21014 on Saturday, November 7, 2026, from 10am -12pm; at which time a funeral will start at 12pm. During gathering hours complimentary breakfast will be served. Burial will follow at Loudon Park Cemetery in Baltimore.
In lieu of flowers, the family asks that memorial contributions be made to The Humane Society of Harford County www.harfordshelter.org/ or to a charity of your choice.
He will be deeply missed by his family, friends, and coworkers.
