The Minister of Defence is the senior minister at the Ministry of Defence in the Estonian Government. The minister is one of the most important members of the Estonian government, with responsibility for coordinating the governments policies on national defence and the military forces. The defence minister is chosen by the prime minister as a part of the government.

The Ministry of Defence of the Republic of Estonia and its head, the Minister of Defence, are responsible for organizing national defence. It is Estonia's ministry of defence. The mission of the Ministry of Defence is to deter attacks against Estonia and ensure that the country is capable of defending itself against external threats. Estonian national defence is based on initial self-defence capability as well as membership in NATO.