Ilmar Tamm (born 4 May 1972) is an Estonian Major General and has served as the commander of the Estonian Defence League since 2023.

In 1994, he graduated from the Finnish Military Academy.

From 2008–2012, he was the head of Cooperative Cyber Defence Centre of Excellence. From 2020–2023, he was the head of Baltic Defence College.

In 2004, he was awarded Order of the Cross of the Eagle, V Class.