Jan Bernard Szlaga (24 May 1940 – 25 April 2012) was the Roman Catholic bishop of the Roman Catholic Diocese of Pelplin, Poland. He was born the youngest of six children of Jan and Helena () Szlaga.
From 1947 to 1953 Szlaga attended elementary school in Gdynia and then went attended Collegium Leoninum in Wejherowo and Collegium Marianum in Pelplin. He studied at the Pelplin Higher Seminary () and was ordained a Roman Catholic priest in Cheà Âmno in 1963. From 1965 to 1969 Father Szlaga continued his biblical studies at the Catholic University of Lublin and from 1972 to 1973 at the Pontifical Biblical Institute in Rome. Upon completing his doctorate in theology, Szlaga took on academic duties in addition to his priestly duties:
In 1988, Szlaga was named Auxiliary Bishop of Cheà Âmno and Titular Bishop of Mascula. In 1992 he was consecrated as Bishop of Pelplin. While serving as Bishop he received Commander's Cross of the Order of Polish Rebirth. He was named an honorary citizen of Chojnice (1994), Starogard Gdaà Âski (2007) and Gdynia (2008), and received the 2010 Award For Services to Pomerania.
Szlaga's health declined just before he was to act as main consecrator of the new Auxiliary Bishop Wiesà Âaw à Âmigiel and he died on 25 April 2012. He is buried beside the altar at the Cathedral Basilica of the Assumption of the Blessed Virgin Mary at Pelplin Abbey.