| Collection | Reference |
| Naesmyth Family, of Posso | Acc.8522 |
| Nairn (James), W.S. and the Bannatyne Club | Acc.12693 |
| Nairnshire Farming Society | Acc.3744 |
| Napier (Mark), Historian | MSS.1663-1664 |
| Napier (Robert W. ) | Acc.11866 |
| Napier (Robert W.) | Acc.10436 |
| Nasmyth (Alexander), Painter | Acc.11900 |
| Nasmyth Prints and Drawings | MSS.3241-3243 |
| National Amalgamated Union of Shop Assistants, Warehousemen and Clerks | Acc.3537 |
| National Amalgamated Union of Shop Assistants, Warehousemen and Clerks, Edinburgh Branch | Dep.359 |
| National Association of Decorative and Fine Arts Societies: Church Recorders | Acc.11951 |
| National Association of Local Government Officers: Gas Branch | Acc.4595 |
| National Council for Carers and their Elderly Dependents: Edinburgh Branch | Acc.9122 |
| National Council of Labour Colleges and Plebs League Records | Acc.5120 |
| National Covenant | Acc.12956 |
| National Covenant | Acc.5492 |
| National Covenant | Adv.MS.20.6.17A |
| National Covenant | Adv.MS.24.6.3 |
| National Covenant | Adv.MSS.20.6.13-20.6.16 |
| National Covenant | Adv.MSS.20.6.18-20.6.19 |
| National Covenant | Ch.4764 |
| National Covenant | Dep.232 |
| National Covenant | MS.1656 |
| National Demonstration in Scotland | Acc.6033 |
| National Independent Order of Oddfellows | Acc.3001 |
| National Independent Order of Oddfellows: Pride of Midlothian Lodge | Acc.3001 |
| National League of the Blind and Disabled: Scottish District | Acc.9418 |
| National League of the Blind: Edinburgh Branch | Acc.4686 |
| National Printing and Kindred Trades Federation: Edinburgh Branch | Acc.3035 |
| National Sailors' and Firemen's Union: Greenock Branch | Acc.4222 |
| National Society of Operative Printers and Assistants: Edinburgh and Granton Branches | Acc.9792 |
| National Society of Operative Printers and Assistants: Granton | Acc.9845 |
| National Union of Clerks: Edinburgh Branch | Acc.4723 |
| National Union of Coopers: Edinburgh and District Branch | Acc.4135 |
| National Union of General and Municipal Workers: Edinburgh No.5 Branch | Acc.4525 |
| National Union of Mineworkers: Scotland | Acc.10483 |
| National Union of Mineworkers: Scotland | Acc.10812 |
| National Union of Mineworkers: Scotland | Acc.9805 |
| National Union of Mineworkers: Scotland, Ayr Area | Dep.258 |
| National Union of Mineworkers: Scotland, Brora Area | Acc.11789 |
| National Union of Mineworkers: Scotland, Fife Area | Acc.4311 |
| National Union of Mineworkers: Scotland, Lanarkshire Area | Dep.227 |
| National Union of Mineworkers: Scotland, Lothians Area | Acc.4312 |
| National Union of Printers, Bookbinders, Machine Rulers and Paper Workers | Acc.4395 |
| National Union of Printing, Bookbinding and Paper Workers: Edinburgh Branch | Acc.4395 |
| National Union of Public Employees: Scottish Region | Acc.4971 |
| National Union of Railwaymen | Dep.188 |
| National Union of Railwaymen: Edinburgh No.1 Branch | Acc.4372 |
| National Union of Railwaymen: Edinburgh No.3 Branch | Acc.4313 |
| National Union of Railwaymen: Newcastleton Branch [Microfilm] | Acc.12255 [MF.MSS.588] |
| National Union of Seamen | Acc.4222 |
| National Union of Seamen: Ardrossan Branch | Acc.5225 |
| National Union of Seamen: Leith Branch | Acc.5428 |
| National Union of Sheet Metal Workers and Braziers: Edinburgh No 1 Branch | Acc.4050 |
| National Union of Vehicle Builders: Edinburgh Branch | Acc.4572 |
| Nattes (John Claude), Topographical Draftsman | MSS.5203-5206 |
| Neil (William) | Acc.11968 |
| Neil MacBeath's Psalter | Adv.MS.70.1.4 |
| Neill (James), Brigadier-General [microfilm] | Acc.5317 [Mf.MSS.171] |
| Neill (Patrick) | Acc.6285 |
| Neill (William) | Acc.11623 |
| Neill (William) | Acc.11673 |
| Neill (William) | Acc.11773 |
| Neill and Company, Printers, Edinburgh | Dep.196 |
| Neill and Company, Printers, Edinburgh | Dep.226 |
| Neilson (B. C. ) | Acc.10428 |
| Neilson (B. C. ) | Acc.10429 |
| Neilson (George), Historical Scholar | Ch.951-1440 |
| Neilson (George), Historical Scholar | MSS.2665-2832 |
| Nether Howden and Cocketrig, Berwickshire | Acc.8099 |
| Nether Lorn Canntaireachd | MSS.3714-3715 |
| Nether Lorn Canntaireachd [transcript] | MSS.2259-2260 |
| Nettle (George Henry) | Acc.11805 |
| Newbattle Abbey Adult Education College | Acc.12299 |
| Newbattle Abbey Cartulary | Adv.MS.34.4.13 |
| Newbattle Abbey Cartulary [transcript] | Adv.MS.20.3.3 |
| Newbattle Abbey Cartulary [transcript] | Adv.MS.34.1.10(i) |
| Newbattle Collection | MSS.5730-5841 |
| Newington Ward Liberal Association | Acc.13565 |
| Newman (William), Private, 3rd Foot Guards | Acc.12054 |
| Nicholson (Ernest), Author | Acc.10275 |
| Nicholson (Ernest), Author | Acc.9373 |
| Niddrie Mill | MS.17952 |
| Nisbet (John), Manufacturer, Paisley | Acc.13484 |
| Nisbet Papers | MSS.5410-5508 |
| North Angus Co-operative Society | Acc.12383 |
| North Berwick Golf Club | Acc.11578 |
| North Berwick Golf Club | Acc.13228 |
| Norwegian Seamen's Mission, Leith [microfilm] | Acc.5691 [Mf.MSS.188] |
| Nye (Robert), Author | Acc.6241 |
| Nye (Robert), Author | Acc.6294 |
| Nye (Robert), Author | Acc.6885 |
| Nye (Robert), Author | Acc.6927 |
| Nye (Robert), Author | Acc.7076 |
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