Lachlan Sven McDonald Giles (born 17 June 1986) is an Australian grappler and Brazilian jiu-jitsu (BJJ) black belt competitor and coach.

[1][2] Growing up he was a huge fan of Jet Li's martial arts movies and trained in Kung Fu initially.

[1][3][4][5] In 2015, Giles competing at Eddie Bravo Invitational 5 where he came third place after defeating Nathan Orchard and Rani Yahya before losing to Garry Tonon by Armbar.

[1][4][6] In 2017, Giles competed at the World IBJJF Jiu-Jitsu No-Gi Championship where he came third place after being defeated by AJ Agazarm by points in the semi-finals.

[1][7] In the 2019 ADCC World Championship, Giles defeated Kaynan Duarte and Patrick Gaudio before being submitted by Gordon Ryan.