Witold Mroziewski (born March 25, 1966) is a Polish-American prelate of the Roman Catholic Church.

He has been serving as an auxiliary bishop of the Diocese of Brooklyn in New York City since 2015.

The diocese then assigned him as parochial vicar at a parish in Kadzidlo, Poland.

[2] Mroziewski went back to KUL to earn a Master of Canon Law degree in 2001.

He was moved from Our Lady in 2013 to Holy Cross Parish in Brooklyn to serve as pastor there.