Igor Arrieta Lizarraga (born 8 December 2002) is a Spanish cyclist, who currently rides for UCI WorldTeam UAE Team Emirates XRG.
He is the son of former professional cyclist José Luis Arrieta.
Arrieta turned professional in August 2021 with UCI ProTeam Equipo Kern Pharma after winning the national under-23 time trial championships earlier that year. In February 2022, he won the young rider classification and finished 7th overall at the O Gran Camiño.
He joined UCI WorldTeam UAE Team Emirates in 2024 on a three-year contract.