Oscar Edgar Onley[3] (born 13 October 2002) is a Scottish cyclist, who currently rides for UCI WorldTeam Team Picnic PostNL.

[7] In 2019, Onley started a two-year stint with the Van Rysel-AG2R La Mondiale development team, though his 2020 season was interrupted by the Covid-19 pandemic.

This included a stand-out performance at the CRO Race, where he closely competed with that year's Tour de France winner, Jonas Vingegaard, on a number of stages.

[15] He also managed to be in the breakaway on the following stage, and was part of the nine-man group that first reached the foot of the Col de la Bonette, but was unable to stay with the leading riders during the ascent.

[21][22] He finished in 16th place with a time of 6:31:22, 3 minutes and 52 seconds behind winner Tadej Pogačar, making him the highest-placed British rider.