Nathan Robert Greaves (born 24 February 1998, Sheffield) is a former motorcycle speedway rider from England.

[1] Greaves started his British speedway career for the Cradley Heathens in 2013.

He raced with Swindon Robins as a fast track reserve in 2014 before joining Workington Comets for the 2014 Premier League speedway season.

[2] Also in 2014, he was part of the Cradley team that won the National League Fours, held on 26 October 2014 at Brandon Stadium.

His final season was with Edinburgh Monarchs in the SGB Championship and Armadale Devils in the National League during 2021.