Hemachandra Wickrama Gerard Wijeyekoon (25 June 1911 – April 1969) was a Sri Lankan military leader and diplomat.
With the outbreak of World War II and the mobilization of the Ceylon Defence Force he began active service, being promoted to captain in 1940.
He was appointed commanding officer of the 2nd Battalion, Ceylon Light Infantry in January 1948 and served till October 1949.
[3] On 14 November 1959, he was promoted to the rank of brigadier and then major general on 1 January 1960 taking over as commander of the Ceylon Army.
During his service, he introduced Sinhalese for parade ground commands and formed the Army Hewisi Band of oriental music.