Reginald Athelstane Arnold OAM (9 October 1924 – 23 July 2017) was an Australian racing cyclist.

Arnold's cycling career began in 1941, when his brothers gave him a bicycle for his birthday. Despite being blind in one eye, Arnold joined Ashfield cycling club in Sydney where he made a name for himself as a capable track sprinter, winning several state titles.^[1]

After World War II, Arnold competed on the European cycling circuit, and won numerous road and track races there as well as in America and Australia between 1946 and 1963.^[2] In 1952 and 1957, he was a member of the team which won the European madison championships (the de facto world title). He specialised in six-day racing and competed in 103 six-day events around the world.^[1]

In 2000, Arnold was awarded the Australian Sports Medal (ASM) for being part of the world number one team for day cycle races for a number of years. In the 2012 Queen's Birthday Honours, he was awarded the Medal of the Order of Australia for services to cycling.^[2]

Arnold died on 23 July 2017, aged 92, in Nerang, Queensland.^[3]