Rear-Admiral Henry Evelyn Charles Blagrove (26 April 1887 – 14 October 1939) was the first British Royal Navy officer of flag rank to be killed in the Second World War. An experienced staff officer and veteran of several actions of the First World War aboard the battlecruiser HMS Tiger, Blagrove had only just received his appointment as commander of the 2nd Battleship Squadron of the Home Fleet when he was killed in the destruction of his flagship HMS Royal Oak by U-47.