Lothar Motschenbacher (November 19, 1938 - ) is a former NASCAR driver from Cologne, Germany. He competed in one Sprint Cup Series event in his career. That came in 1970, when Motschenbacher raced in the season opener at Riverside. Starting 31st in the forty-four car field, Motschenbacher completed just 7 laps before falling out with clutch issues. He finished a disappointing 40th as a result.