Sir William Mackworth Young KCSI (1840–1924) was a member of the Indian Civil Service, who became Lieutenant-Governor of the Punjab 1897–1902.
Young was the son of Captain Sir George Young, 2nd Baronet. He attended Eton and King's College, in Cambridge, receiving a Bachelor of Arts degree in 1863 and a master of arts in 1866. Young joined the I.C.S. in Bengal in 1863, subsequently holding the title of Financial Commissioner of the Punjab from 1889 to 1895 and Lieutenant Governor of the Punjab 1897–1902. He stepped down in early March 1902, and left Bombay for the United Kingdom on 8 March 1902.
Young also served as a member of the Imperial Legislative Council in 1893.
His eldest son was Gerard Mackworth Young.