Shaw lahir di [[Kingston upon Thames]],<ref name="chelseafeb2013">{{cite news |url=http://www.dailymail.co.uk/sport/football/article-2284192/Chelsea-set-land-10m-Southampton-teenager-Luke-Shaw-replace-Ashley-Cole.html |title=EXCLUSIVE: Chelsea set to land £10m replacement for Cole - Southampton teen sensation Shaw |last=Mokbel |first=Sami |publisher=''[[Daily Mail]]'' |date=25 February 2013 |accessdate=10 September 2013 }}</ref> dan lulusan [[Rydens PerusahaanEnterprise School]] di [[Hersham]], [[Surrey]].<ref>{{cite news |url=http://www.saintsfc.co.uk/news/article/birthday-boy-shaw-signs-on-911473.aspx |title=Birthday boy Shaw signs on |publisher=[[Southampton F.C.]] |date=12 July 2013 |accessdate=10 September 2013 }}</ref><ref>{{cite news |url=http://www.rydens.surrey.sch.uk/index.php?option=com_content&view=article&id=742:res-alumni-luke-shaw&catid=36:general-school-news&Itemid=535 |title=RES Alumni - Luke Shaw |publisher=[[Rydens Enterprise School]] |date=3 December 2012 |accessdate=10 September 2013 }}</ref> Ia dibesarkan sebagai seorang pendukung Chelsea, dan telah mengklaim bahwa ia awalnya ingin bermain untuk klub London tersebut.<ref>{{cite news |url=http://www.saintsfc.co.uk/news/article/shaw-savouring-chelsea-contest-740468.aspx |title=Shaw Savouring Chelsea Contest |publisher=[[Southampton F.C.]] |date=29 March 2013 |accessdate=10 September 2013 }}</ref> Shaw telah delapan tahun bermain di pusat pengembangan Chelsea di [[Guildford]], tetapi tidak ditawari tempat akademi.<ref>{{cite news |url=http://www.telegraph.co.uk/sport/football/teams/chelsea/10514910/Chelsea-expected-to-make-20m-move-for-Southamptons-Luke-Shaw-during-January-transfer-window.html |title=Chelsea expected to make £20m move for Southampton's Luke Shaw during January transfer window |publisher=telegraph.co.uk |date=12 December 2013|accessdate=12 December 2013 }}</ref>
