[4] The founder of the institute was Ján Langoš, who served as director until his death in a car crash in 2006.

In December 2021 it was announced that by 2026, the Institute should relocate to newly modernised and reconstructed buildings at Krížna Street in Bratislava, where a library and an exposition were to be opened to the public.

[5] One of the institution's staff historians, Martin Lacko, was fired in 2016 for promoting the First Slovak Republic.

[6] James Mace Ward commented that the National Memory Institute "has done a brisk trade in publications on the Slovak Republic, much of this scholarship being of high quality.

[7] Political scientist Jelena Subotić states that after Langoš's death, "The Institute’s main goal became the delegitimization of Slovakia’s communist regime, achieved by grouping it together with fascism while making a case that communist dictatorship was, in fact, worse.