No, Olaf is not a recognized saint in any major Christian denomination.
Olaf is a common name, and there are many historical figures with that name. The most famous might be Olaf II of Norway, who is often referred to as Olaf the Saint. He was a king who reigned from 1016 to 1028 and is considered a national hero in Norway. However, while he is revered by many Norwegians, he is not canonized by the Roman Catholic Church or other major Christian denominations.
The term "saint" typically refers to individuals who have been officially recognized by a religious authority for their exemplary piety and holiness. While Olaf II of Norway is highly respected in Norwegian culture and is often referred to as a saint, he has not undergone the formal process of canonization.
Therefore, while Olaf II of Norway is considered a significant historical figure and a hero in Norway, he is not a recognized saint in the official sense.
