Family name Brún (Bryn 
, Brún 
) , throughout the world, is quite a rare surname. The surname Brún is habitual in Norway, where it is quite a common surname, Ireland, where it is quite a rare surname, and Uganda, where it is a rare surname. Measured by absolute frequency, the name is most common in Norway, the United States, and Uganda. More frequently, Brún is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bryn | Australia, Norway, Zimbabwe, United States, United Kingdom |
| Brún | Ireland, Colombia |
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seoirse de brún Irish soldier of fortune, IE (b. 1698) |
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| pádraig de brún Irish academic, IE (b. 1889) |
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| séamus de brún Irish politician (1911-2003), IE (b. 1911) |
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| nollaig de brún Irish politician (1915-1997), IE (b. 1915) |
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| antóin de brún Irish hurler, IE (b. 1973) |
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| aoife de brún researcher |
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| pól de brún Irish hurler, IE (b. 1989) |
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| seán de brún Irish hurler, IE (b. 1993) |
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