Sebastianus Adrianus Wilhelmus Rudolfus "Bas" Mulder (17 July 1931 – 10 April 2020) was a Dutch-Surinamese Catholic priest.
As a missionary of the Catholic Church, Mulder moved from the Netherlands to Suriname in 1959.
During the 1980 Surinamese coup d'état, when no newspapers were published, he wrote critical articles in the church magazine Omhoog.
[3] As a priest Mulder was postulator for 30 years in the beatification of Peter Donders who had also served in Suriname.
He considered the beatification of Donders by Pope John Paul II in 1982 a highlight of his career.