Alexandra Greenfield (born 1990) is a Welsh former road and track cyclist from Barry. She began competing at a young age with the Maindy Flyers children's cycle club before joining Cardiff Ajax CC. Greenfield holds the record for the 5 km Tandem Standing Start event on the track along with Katie Curtis, with a time of 7 minutes 4.424 seconds. The record was set in Newport Velodrome on 10 June 2004.[2] She transitioned from Wiggle High5's former technical director and assistant directeur sportif, to be Cycling New Zealand's women's endurance assistant coach by mid-2018.[3]