Admiral Sir George Michael Zambellas, GCB, DSC, ADC, DL, FRAeS (born 4 April 1958)[1] is a British retired Royal Navy officer.

[1] Promoted as rear admiral on 29 August 2006[13] and appointed Chief of Staff (Transformation),[1] Zambellas was in this role entrusted with "designing and delivering the Fleet's new approach to the generation of maritime capability and support to operations.

[5] Zambellas was appointed Knight Commander of the Order of the Bath (KCB) in the 2012 Birthday Honours[19] and became First Sea Lord and Chief of the Naval Staff on 9 April 2013.

[21] On 15 April 2014, in an op-ed article for the Daily Telegraph Zambellas laid out the case for a "No" vote at the 2014 Scottish independence referendum, stating that it would weaken British maritime defence.

[22] Despite this, on 12 November 2014 he was publicly chastised by the UK Defence Secretary for suggesting to a journalist that the contract for Type 26 frigates may not be awarded to Scottish shipyards.

[27] Zambellas was appointed Knight Grand Cross of the Order of the Bath (GCB) in the 2016 New Year Honours[29] being invested at Windsor Castle with Air Chief Marshal Sir Andrew Pulford on 13 April 2016.

[31] Elected a Fellow of the Royal Aeronautical Society (FRAeS) in 2009,[1] and appointed a Deputy Lieutenant (DL) for Dorset in September 2013,[32] Zambellas serves as an Extra Equerry to King Charles III since 17 March 2023.