Derek Oldham (29 March 1887 – 20 March 1968) was an English singer and actor, best known for his performances in the tenor roles of the Savoy Operas with the D'Oyly Carte Opera Company.After performing in concerts as a boy soprano and working as a bank clerk, Oldham began a professional performing career in 1914. With the outbreak of World War I, he joined the Scots Guards, serving with valour.