Johannes Andreas Maria "Jan" Reijnen (3 February 1927 – 7 April 2020) was a Dutch politician of the Catholic People's Party and its successor the Christian Democratic Appeal. He served as a Senator from 1972 to 1977. He was also mayor of Wervershoof (1964–1969), Oldenzaal (1969–1976) and Heerlen (1976–1986). He was born in Kaatsheuvel, North Brabant.