Sir Don Baron Jayatilaka, KBE (Sinhala:ශ්රීමත් දොන් බාරොන් ජයතිලක; 13 February 1868 – 29 May 1944) known as D.B. Jayatilaka was a Sri Lankan Sinhalese educationalist, statesmen and diplomat. He was Vice-President of the Legislative Council of Ceylon; the Minister for Home Affairs and Leader of the House of the State Council of Ceylon; and Representative of Government of Ceylon in New Delhi. Sir D. B. Jayatilaka is also considered as a flag bearer of Buddhist education in Sri Lanka.