Adam Mariusz Kwiatkowski (born 7 December 1972 in Warsaw) is a Polish politician, since 2022 serving as an ambassador to the Holy See.

Kwiatkowski has been lecturing Entrepreneurship of Local Communities at the Kozminski University.

[1] On 7 August 2015, he ended his term as MP and was appointed Secretary of State by the President of Poland Andrzej Duda.

[5] From 3 August 2015 until 3 April 2017 he served as Chief of the Cabinet of the President of Poland; he was succeeded by Krzysztof Szczerski.

[1] On 11 April 2022 he was nominated ambassador to the Holy See,[6] accredited also to the Sovereign Military Order of Malta.