The Olav reference article from the English Wikipedia on 24-Apr-2004
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Olav

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The name Olav (Olaf,), the name of the Saint, King Olaf II who is the patron of Norway, has also been borne by a number of other Norwegian kings. Conventions of spelling remain quite fluid.

See also List_of_Norwegian_monarchs.

OLAF in the European Union is an acronym for the Office Europeen de Lutte Anti-Fraude, the European Anti-Fraud Office.

For men with the first name "Olaf/Olav." see under their full names.

In its latinized form Olaf usually comes out as Olaus, with or without an umlaut on the "u", as is the case for Olaf Petersson, a disciple of Luther (and one of the first preachers of the Reform in Renaissance Sweden) who is also known as Olaus Petri.

There are also Olof-Olaf variants for pre-christian or early christian Swedish kings of the 10th century, such as the officially baptized Olof of Sweden.

See also List_of_Swedish_monarchs.