| Madsvannet | Nordland, Norway | 1 | 1 | 0 | 1990-09-22 | |
| Maltjern | Akershus, Norway | 9 | 4 | 0 | 1992-06-23 | |
| Mannslagervatnet | Nordland, Norway | 1 | 1 | 0 | 1989-08-30 | |
| Meitjenn | Telemark, Norway | 1 | 1 | 0 | 2004-09-13 | |
| Merkestjørna | Vestland, Norway | 1 | 1 | 0 | 1990-06-06 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Milde | Vestland, Norway | 1 | 1 | 0 | 2018-08-30 | |
| Minde skole | Vestland, Norway | 1 | 1 | 0 | 2021-08-30 | |
| Minde skole | Vestland, Norway | 1 | 1 | 0 | 2021-09-09 | |
| Mjølanskogen | Nordland, Norway | 1 | 1 | 0 | 2010-05-20 | |
| Mjølfjell | Vestland, Norway | 13 | 6 | 10 | 2023-09-07 | |
| Mjølfjell | Vestland, Norway | 11 | 5 | 5 | 2019-08-28 | |
| Mjølfjell, Kleivafjell | Vestland, Norway | 13 | 3 | 2 | 2019-09-03 | |
| Moahaugen (haugen bak Ytrebygda skole) | Vestland, Norway | 3 | 2 | 1 | 2014-05-16 | |
| Moensvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-11-07 | |
| Molbekktjernet | Østfold, Norway | 1 | 1 | 0 | 1989-09-04 | |
| Myklavatnet | Vestland, Norway | 2 | 2 | 0 | 1990-09-25 | |
| Myklebustvannet | Møre og Romsdal, Norway | 5 | 2 | 0 | 1992-06-16 | |
| Myr ved Markaplassen skole | Trøndelag, Norway | 4 | 1 | 0 | 2019-06-06 | |
| Myravatnet | Vestland, Norway | 4 | 4 | 0 | 2007-05-03 | |
| Myravatnet | Vestland, Norway | 5 | 4 | 0 | 2016-05-14 | |
| Myrdal | Vestland, Norway | 7 | 4 | 2 | 2019-09-28 | |
| Mølledammen i Lomma 1 | Akershus, Norway | 1 | 1 | 0 | 2008-10-22 | |
| Nes Verk rundt | Agder, Norway | 17 | 4 | 0 | 2024-05-31 | |
| Nitelva ved Smedstusvingen | Akershus, Norway | 1 | 1 | 0 | 2013-06-11 | |
| Nordli_Ankerveien | Akershus, Norway | 2 | 2 | 0 | 2014-08-27 | |
| Nordre Skeisvatn | Rogaland, Norway | 1 | 1 | 0 | 2005-09-16 | |
| Nordsjøløypa | Vestland, Norway | 1 | 1 | 0 | 2006-05-11 | |
| Nøklevann | Oslo, Norway | 5 | 2 | 0 | 1994-09-05 | |
| Oasen skole Birkelid AS | Agder, Norway | 5 | 5 | 6 | 2021-09-17 | |
| Odderøya | Agder, Norway | 1 | 1 | 0 | 2001-08-24 | |
| Olsvik skole | Vestland, Norway | 4 | 2 | 1 | 2023-09-01 | |
| Olsvik skole nærmiljø | Vestland, Norway | 1 | 1 | 0 | 2023-08-29 | |
| Oltervatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Opsangervatnet | Vestland, Norway | 3 | 2 | 0 | 1993-06-09 | |
| Orrtuvatnet | Vestland, Norway | 1 | 1 | 0 | 2016-04-21 | |
| Ortunvannet | Vestland, Norway | 4 | 2 | 0 | 2016-04-21 | |
| oslvik skole | Vestland, Norway | 1 | 1 | 1 | 2022-08-22 | |
| Parken ungdomsskole | Nordland, Norway | 43 | 2 | 41 | 2022-09-19 | |
| Prestvatn | Agder, Norway | 3 | 1 | 0 | 1994-09-12 | |
| Radarstasjonen | Vestland, Norway | 1 | 1 | 0 | 2010-09-19 | |
| Raudsjøen | Trøndelag, Norway | 1 | 1 | 0 | 1989-08-31 | |
| Reiarsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-09-14 | |
| Reinsvolldammen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Renslotunet | Buskerud, Norway | 11 | 6 | 0 | 2010-05-28 | |
| Resvatnet | Trøndelag, Norway | 2 | 2 | 0 | 1991-09-01 | |
| Ringve videregående skole | Trøndelag, Norway | 2 | 1 | 0 | 2006-05-22 | |
| Rogaland arboret | Rogaland, Norway | 1 | 1 | 0 | 2020-08-26 | |
| Rolfsbukta, Fornebu | Akershus, Norway | 2 | 2 | 0 | 2010-08-25 | |
| Rornesvannet | Troms, Norway | 1 | 1 | 0 | 2006-09-20 | |
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