Is one name studies for particular areas or world wide?

Question

My Genealogy line is Orr. I am interested in a one name study but i need to know if it is world wide.

Comments

There is already an Orr Name Study:
https://www.wikitree.com/wiki/Space:Orr_Name_Study

Answer 1

It is world wide.

From the Help pages:

The term "one name study" may refer more specifically to a genealogical research project to investigate the origins of a family name and sort out the various family lines. Since everything on WikiTree is collaborative we don't make a distinction between research studies and collaborative projects. A One Name Study on WikiTree welcomes and includes the research of all Wiki Genealogists who are interested in the same surname. 

Read on:

https://www.wikitree.com/wiki/Project:One_Name_Studies

Answer 2

Take a look at the ONS FAQ page:

https://www.wikitree.com/wiki/Space:One_Name_Studies_FAQ_Page

The only things I can think of that it's NOT, is for a Scottish Clan (have their own project) or descendants of a particular couple (where you are studying a lineage, not a name)