| Dennis Horn | |
| Birth Date: | 5 July 1909 |
| Birth Place: | Upwell, Norfolk, England [1] |
| Discipline: | Track cycling |
| Role: | Rider |
| Show-Medals: | yes |
Dennis Sutton Horn (1909 – 1974) was an English male track cyclist.[1]
In the early 1920s Dennis and his older brother Cyril took up cycling, Cyril had represented Great Britain at two Olympic Games as a speed skater. Dennis became British champion when winning the British National Tandem Sprint Championships with John Sibbit in 1932.[2] He later won an individual title, winning the Sprint Championship at the 1938 British National Track Championships.
Dennis featured in a cigarette card published by Senior Service cigarettes (J. A. Pattreiouex Ltd) in 1935. It was no. 25 of a set of 96 entitled Sporting Events and Stars.They raced for Norwich ABC (Amateur Bicycle Club).