Maciej Ruczaj (born 1983) is a Polish political scientist and diplomat, who from 2023 to 2024 served as Poland's ambassador to Slovakia.

[2] He graduated from political science and international relations at the Faculty of Social Sciences, Charles University, as well as English studies and the Faculty of Arts, Charles University.

[2] As a journalist and opinion journalist he has been publishing on Polish, Czech and Slovak history, literature and society in several media,[2] e.g. "Lidové noviny",[5] Echo24 [Wikidata],[6] "Międzynarodowy Przegląd Polityczny [Wikidata]",[7] .týždeň.

[8] In late 2000s, he started his diplomatic career at the Polish Institute in Prague,[9] since 2010 as a head of a unit.

[11] On 14 October 2023, he took the post of Polish ambassador to Slovakia,[12] presenting his letter of credence to the President Zuzana Čaputová on 15 November 2023.