Lubomir REHAK was born in 1970 in Topoľčany, Slovakia. In 1992 graduated from the Moscow State Institute of International Relations (MA, PhD in 1997) and started his professional carrier at the Ministry of Foreign Affairs of Slovakia. His first 5-year diplomatic posting abroad was in Moscow as the Private Secretary to the Ambassador and Political Officer for Central Asia (1993-1998).

He then went for 4 years to the Embassy in Lisbon as Deputy Head of Mission (1999-2003). After that he became the European Correspondent of the Foreign Ministry - co-ordinator for the area of the EU Common Foreign and Security Policy (2004-2006).

His next posting was Belarus as Chargé d´affaires at the embassy in Minsk (2006-2008). While there he also undertook the duties of the EU Local Presidency in Belarus in 2nd semester 2007. He then moved to Brussels as Ambassador - Representative of Slovakia to the EU Political and Security Committee (2008-2010) and upon returning to Bratislava he was appointed a Political Director of the Ministry of Foreign Affairs (2010-2011).

In 2011, the President of the Republic appointed him as Ambassador Extraordinary and Plenipotentiary of the Slovak Republic to the Republic of Kazakhstan and the Kyrgyz Republic and he began his duties at the Embassy in Astana in June 2011.

As of October 2012 he was again appointed a Political Director (Director-General for Political Affairs) at the Ministry of Foreign and European Affairs of the Slovak Republic in Bratislava.

In 2015-2020 he has represented Slovakia as the Ambassador to the Court of St. James´s in London. In December 2020 he was appointed to Moscow as the Ambassador of Slovakia to Russia.

Ambassador Rehák is married, his spouse Dana also works with the Foreign Ministry. They have 2 daughters - Magdaléna and Alžbeta. He speaks English, Russian and Portuguese and can communicate also in French, Spanish, Belarusian and Polish.

Ľubomír Rehák is a member of the Sacred Military Constantinian Order of Saint George in grade of the Knight-Commander of Merit with Star (historic dynastic Order of the Franco-Neapolitan branch of the Royal House of Bourbons Two Sicilies). He is a Freeman of the City of London and was awarded the Tree of Peace Memorial Plaque by non-governamental organisation Servare et Manere, Slovakia.