Colonel Charles Ernest Randolph Mackesy CMG, CBE, DSO (9 January 1861 – 20 November 1925) was a New Zealand military leader and farmer.

He was commander of Auckland Mounted Rifles Regiment, serving briefly at Gallipoli, and more substantially during the campaign in the Sinai and Palestine.

His father, a former officer in the 97th Regiment of Foot, had recently purchased a farm near Whangārei, in New Zealand, but died there a few months prior to the birth of his son.

A successful citizen soldier, by 1911 he had reached the rank of lieutenant colonel and was commander of the 11th (North Auckland) Mounted Rifles.

[4] Sent to the Middle East with the main body of the NZEF, the AMR, sans their horses which were left back in Egypt, served at Gallipoli from May 1915.

He finished the war as Military Governor of Es Sal-Amman District in Jordan and supervised the transfer of power back to Arab administrators.

He was mentioned in dispatches for a third time early in 1919[7] and later that year was appointed a Commander of the Order of the British Empire for "valuable services rendered in connection with Military Operations in Egypt".