This is confirmed by an official announcement of the officiating crew for the fixture made by UEFA, via FCInterNews.
42-year-old referee Maciniak has been refereeing matches in the Polish top flight since 2009.
The Pole has also been refereeing matches in the Champions League since 2012.
Marciniak To Take Charge Of Inter Milan Vs Man City Clash – Kwiatkowski In The VAR Booth
Assisting Marciniak in his duties will be Paweł Sokolnicki e Tomasz Listkiewicz. The assistant in reserve will be Romanian referee Vasile Florin Marinescu.
Meanwhile, the role of fourth official will be filled by Istvan Kovacs.
In the VAR room, Tomasz Kwiatkowski will oversee the match to ensure that any errors made by the on-pitch crew are corrected. He will be assisted in his duties by Polish referee Bartosz Frankowski and German Marco Fritz.
The Nerazzurri will be hoping that the focus stays on the action on the pitch as they aim to win Europe’s top club competition. This would be the fourth Champions League or European Cup win in the club’s history.
The Nerazzurri beat the likes of Porto, Benfica, and AC Milan to reach the final. Meanwhile, Man City overcame the likes of RB Leipzig, Bayern Munich, and Real Madrid.