Sir Charles Otto Desmond MacCarthy FRSL (20 May 1877 – 7 June 1952) was a British writer and literary and dramatic critic.
A member of the Bloomsbury Group, MacCarthy also had a wider circle of friends, including Logan Pearsall Smith.
In 1917 he joined the New Statesman as a drama critic, and in 1920 became its literary editor.
They had two sons, Michael and Dermod, and a daughter, Rachel, who married the literary historian Lord David Cecil; their son was the actor Jonathan Cecil.
He is buried with his wife at the Parish of the Ascension Burial Ground in Cambridge.