Saint Olaf II, King Olaf II of Norway

St. Olaf Choir, the a cappella choir of St. Olaf College

St. Olaf Kirke, a historical Lutheran church located near Cranfills Gap, Texas.

St. Olaf, Iowa, United States

St. Olaf Township, Minnesota, United States

St. Olaf, Minnesota, a fictional town referred to in the television series The Golden Girls

St. Olaf's Castle, 15th century castle in Savonlinna, Finland

St. Olaf College, a private, liberal arts college in Northfield, Minnesota