Pentecost, also known as Whit Sunday or Whit Monday, is a significant religious holiday in Finland. The holiday is rooted in Christianity and is a celebration of the descent of the Holy Spirit upon the Apostles and other followers of Jesus Christ, as described in the New Testament of the Bible. The event is said to have occurred 50 days after Easter, which is why the name Pentecost, which means 'fiftieth', was adopted.

In Finland, like in many other countries, Pentecost is observed with various religious events, including special church services. Many Finnish people take this occasion to connect with their faith and their church communities. The holiday falls on a Sunday and Monday, which often leads to a long weekend for the Finns. Traditionally, white clothes were worn during Pentecost, which led to the holiday also being known as 'Whit Sunday'.

While Pentecost is primarily a religious holiday, it carries cultural significance as well. The long weekend that comes with Pentecost allows people to enjoy the onset of the summer season, often marked by get-togethers, outings, and various outdoor activities. Despite the secularization of society, Pentecost remains a significant staple in the Finnish calendar, blending religious, cultural, and social aspects into one vibrant holiday.