Ilmar Raud (30 April 1913 - 13 July 1941) was an Estonian chess master.
Raud was born in Viljandi, Estonia. He played several times in the Estonian championships at Tallinn. In 1933, he tied for 3rd-5th at the 5th EST-ch. The event was won by Gunnar Friedemann. In 1934, he won the 6th EST-ch. In 1936, he took 3rd at the 8th EST-ch. The event was won by Paul Felix Schmidt. In 1937, he took 7th at Parnu (Schmidt won). In 1937, he took 2nd, behind Schmidt, at the 9th EST-ch. In 1939, he won the 10th EST-ch.
He played for Estonia on fourth board in the 6th Chess Olympiad at Warsaw 1935 (+4 -4 =7), on second board in 3rd unofficial Olympiad at Munich 1936 (+7 -8 =5), on second board in the 7th Olympiad at Stockholm (+7 -2 =8), on second board in the 8th Olympiad at Buenos Aires 1939 (+7 -5 =5). The Estonian team (Paul Keres, Raud, Schmidt, Friedemann, Johannes Türn) took 3rd place, behind Germany and Poland, in the last pre-war Chess Olympiad.
In September 1939, when World War II broke out, Raud, along with many other participants of the 8th Chess Olympiad, decided to stay in Argentina.