Flann
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Flann is both an English surname and an Irish masculine given name, but has also been used as a feminine given name.<ref>Template:Cite web</ref>
It might refer to:
- Flann Fína mac Ossu, another name for King Aldfrith of Northumbria (died 704 or 705)
- Flann mac Lonáin (died 896), Irish poet
- Flann Sinna (died 916), also called Flann mac Maíl Sechnaill, High King of Ireland
- Flann Mainistrech (died 1056), Irish scholar
- Flann O'Brien, a pen name used by Irish writer Brian O'Nolan (1911–1966)
FLANN, an acronym for Fast Library for Approximate Nearest Neighbors, is a C++ library for approximate nearest neighbor search in high-dimensional spaces.<ref>Arul Suju, Hancy Jose, FLANN: Fast approximate nearest neighbour search algorithm for elucidating human-wildlife conflicts in forest areas Template:Doi</ref>