Klasse: Insects (Insecta)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Øvre Storfjordvatnet | Nordland, Norway | 46 | 37 | 0 | 1991-09-04 | |
| Øvre Vassivarvatn | Vestland, Norway | 1 | 1 | 0 | 2006-08-23 | |
| Øvre Årdal | Vestland, Norway | 3 | 3 | 0 | 2010-07-17 | |
| Øvrefoss ved Gausvik | Troms, Norway | 1 | 1 | 1 | 2009-08-15 | |
| Øvresetertjern | Oslo, Norway | 2 | 2 | 0 | 2018-08-05 | |
| Øvsthus, Hosanger | Vestland, Norway | 309 | 171 | 69 | 2016-06-07 | |
| Øvsttunstemmen | Vestland, Norway | 7 | 5 | 0 | 2013-04-24 | |
| Øya i Mosjøen | Nordland, Norway | 1 | 1 | 0 | 2007-04-30 | |
| Øya/stadioen | Trøndelag, Norway | 2 | 1 | 0 | 2009-08-21 | |
| Øyakleiva | Innlandet, Norway | 3 | 3 | 1 | 2017-07-21 | |
| Øyamelen | Trøndelag, Norway | 1 | 1 | 0 | 2011-06-26 | |
| Øyane | Vestland, Norway | 17 | 17 | 0 | 2017-06-24 | |
| Øyardalen | Rogaland, Norway | 4 | 4 | 0 | 2011-04-21 | |
| Øydal | Trøndelag, Norway | 25 | 22 | 0 | 2012-06-23 | |
| Øydingen | Trøndelag, Norway | 8 | 8 | 1 | 2008-07-20 | |
| Øye | Agder, Norway | 1 | 1 | 0 | 2017-06-05 | |
| Øyeren, Akershus | Akershus, Norway | 1 | 1 | 0 | 2007-03-29 | |
| Øygården | Nordland, Norway | 2 | 2 | 1 | 2024-05-30 | |
| Øygårdsosen | Nordland, Norway | 2 | 2 | 2 | 2021-05-27 | |
| Øygårdsvannet | Agder, Norway | 7 | 7 | 0 | 2015-06-20 | |
| Øymark kirke | Østfold, Norway | 7 | 7 | 4 | 2015-04-19 | |
| Øymarksjøen | Østfold, Norway | 9 | 9 | 0 | 1997-05-29 | |
| Øyne | Agder, Norway | 10 | 1 | 0 | 2005-08-25 | |
| Øynefjorden | Vestland, Norway | 5 | 5 | 4 | 2010-07-04 | |
| Øyraveen 25 | Nordland, Norway | 1 | 1 | 0 | 2023-06-11 | |
| Øyrtangen | Rogaland, Norway | 36 | 36 | 11 | 2010-08-13 | |
| Øystese | Vestland, Norway | 1 | 1 | 0 | 2012-04-10 | |
| Øytangen | Telemark, Norway | 64 | 64 | 0 | 2016-08-29 | |
| Øytangen, Jomfruland | Telemark, Norway | 367 | 159 | 36 | 2015-07-12 | |
| Å barneskole | Agder, Norway | 1 | 1 | 0 | 2008-04-28 | |
| Åalia | Møre og Romsdal, Norway | 1 | 1 | 1 | 2018-05-21 | |
| Åbogsmoen | Innlandet, Norway | 3 | 3 | 3 | 2016-07-10 | |
| Åbøgrend | Telemark, Norway | 1 | 1 | 0 | 2020-04-28 | |
| Åbålvika | Agder, Norway | 1 | 1 | 0 | 2010-06-24 | |
| Ådalen | Møre og Romsdal, Norway | 3 | 3 | 3 | 2019-07-09 | |
| Ådalsvollen | Trøndelag, Norway | 1 | 1 | 0 | 2007-04-15 | |
| Ådland | Vestland, Norway | 1 | 1 | 0 | 2011-04-08 | |
| Ådlandsand | Rogaland, Norway | 3 | 2 | 1 | 2014-06-26 | |
| Åfarnes | Møre og Romsdal, Norway | 3 | 3 | 0 | 2010-08-04 | |
| Åfjorden | Trøndelag, Norway | 2 | 1 | 0 | 2007-04-03 | |
| Ågotnes | Vestland, Norway | 1 | 1 | 1 | 2008-04-20 | |
| Ågskardet | Nordland, Norway | 1 | 1 | 0 | 2008-04-22 | |
| Ågårdsdam | Troms, Norway | 4 | 3 | 0 | 2013-09-13 | |
| Åkra | Rogaland, Norway | 4 | 4 | 7 | 2019-06-18 | |
| Åkrasand | Rogaland, Norway | 4 | 4 | 2 | 2021-08-21 | |
| Åkrasanden | Rogaland, Norway | 31 | 26 | 7 | 2010-07-17 | |
| Åkrehamn | Rogaland, Norway | 1 | 1 | 0 | 2010-07-15 | |
| Åkresanden | Rogaland, Norway | 1 | 1 | 0 | 2010-06-06 | |
| Ålesundsaksla | Møre og Romsdal, Norway | 7 | 7 | 0 | 1999-10-07 | |
| Åletjern | Telemark, Norway | 5 | 5 | 0 | 2000-06-06 | |
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