Attila Valter (born 12 June 1998 in Csömör) is a Hungarian professional racing cyclist who currently rides for UCI WorldTeam Visma–Lease a Bike.

At the 2019 Tour de l'Avenir he won the ninth stage to Tignes.

For the 2020 season Valter turned professional for the senior CCC Team.

[5] In October 2020, he was named in the startlist for the 2020 Giro d'Italia, making his Grand Tour debut.

At the 2021 Giro d'Italia, he took the overall lead after the sixth stage to San Giacomo, becoming the first Hungarian rider to wear the pink jersey.