Thaddäus “Thaddy” Robl (22 October 1877 – 18 June 1910) was a German professional cyclist who was active between 1894 and 1910, initially in road racing, later predominantly in motor-paced racing. From 1895 to 1898 he obtained several podium finishes in long distance road races, the most emblematic of which is his 3rd place in the 1898 Bordeaux – Paris.
After retiring from cycling he became passionate with flying the early planes. In a flight demonstration on 18 June 1910 in Szczecin (then German Empire) he fell from a height of about 75 meters. This was the first death of a civil pilot on the German ground. In 1947, a street in Munich was named after him.