Tobias Bayer (born 17 November 1999) is an Austrian racing cyclist, who currently rides for UCI WorldTeam Alpecin–Deceuninck.

[4] In June 2019, Bayer delivered a noteworthy performance at the Austrian National Road Race Championships near Mondsee, finishing fifth overall and winning the under-23 title ahead of several World Tour professionals.

[5] Bayer rode his first Grand Tour, Vuelta a España in 2021 and supported his captain and sprinter Jasper Philipsen in two stage victories.

In 2021 he became Austrian national champion in the under-23 category in both the road race and time trial.

[8] During the 2020 Giro Ciclistico d'Italia, he finished third on the third stage and briefly led the mountains classification.