Lionel Frederick Marson MC (15 June 1895 – 31 March 1960) was an English first-class cricketer, British Army officer and actor. Marson was commissioned into the 4th Royal Irish Dragoon Guards, serving in the First World War in which he was awarded the Military Cross. He was seconded into the Royal Air Force between 1918 and 1926, before returning to the Irish Dragoons and retiring from active service in 1930. The final year of his military service saw him play first-class cricket for the British Army cricket team. After retiring he became a radio announcer and an actor, starring in several minor roles. As an announcer for the BBC Home Service, he made the first announcement of the German Invasion of Poland.