| 5701 | NSMU | TEREX GERMANY GMBH & CO KG | | | SCAC4 |
| 5702 | NSMV | NORTHSIDE MOVERS INC | | | SCAC3 |
| 5703 | NSMW | NEWSTART SEA MARITIME S A | | | SCAC4 |
| 5704 | NSMX | NORTHSHORE MINING COMPANY | | | SCAC4 |
| 5705 | NSMZ | NATIONAL STEEL MIDWEST DIVISION | | | PWRC |
| 5706 | NSNA | NAVONG, SONG NICK | | | SCAC4 |
| 5707 | NSNH | NEW SUNNYHILL TRANSPORTATION INC | | | SCAC3 |
| 5708 | NSNK | NELSON TRUCKING | | | SCAC4 |
| 5709 | NSNO | NELSON OIL COMPANY INC | | | SCAC4 |
| 5710 | NSNP | NELSEN TRANSPORTATION CO | | | SCAC4 |
| 5711 | NSNR | NEIL & SON TRUCKING | | | SCAC3 |
| 5712 | NSNS | NASSAU SAND & STONE CO | | | SCAC3 |
| 5713 | NSNS | NSN TRANSPORT | | | SCAC4 |
| 5714 | NSNT | NORSEMEN TRANSPORTATION INC | | | SCAC4 |
| 5715 | NSNV | NIKOO, SOFIE NEVADA TOURS INC | | | SCAC3 |
| 5716 | NSO | Aerolineas Sosa, S.A. | IATA: P4, Callsign: Sosa, Desginator P4* reinstated byIATA | HN | AVCODES |
| 5717 | NSO | Aerolineas Sosa | | | ICAO1 |
| 5718 | NSO | Norfolk Southern R.R. | Real: NS, The old Norfolk Southern company, before the merger with Norfolk Western. | USA | TRAFFIC |
| 5719 | NSOF | NINE ZERO SIX ONE- FIVE FOUR SEVEN | | | SCAC4 |
| 5720 | NSOP | NORTH SHORE OIL & PROPANE INC | | | SCAC4 |
| 5721 | NSOQ | NINE ONE SIX ZERO-ONE ONE THREE | | | SCAC4 |
| 5722 | NSOU | NORDIC SHELTER AS | | N | BIC |
| 5723 | NSOU | NORDIC SHELTER AS | | | SCAC4 |
| 5724 | NSOX | Shell Canada Ltd. | added 10/1963; 7/1965-4/1970; eliminated 1/1974 | | NAKINA |
| 5725 | NSOX | North Star Oil Division of Shell Oil Co. of Canada, Ltd. | added 1/1962; eliminated 10/1963 | | NAKINA |
| 5726 | NSOX | North Star Oil, Ltd. | 7/1930-4/1961; eliminated 1/1962 | | NAKINA |
| 5727 | NSOX | North Star Oil, Ltd. | 4/38-4/61; eliminated 1/62 | | NRHS |
| 5728 | NSOX | North Star Oil Division of Shell Oil Co. of Canada, Ltd. | added 1/62 | | NRHS |
| 5729 | NSOX | Shell Canada Ltd. | 7/65-4/70; eliminated 1/74 | | NRHS |
| 5730 | NSOX | SHELL CANADA LTD. [NORTH STAR OIL, LTD.] | | | PWRC |
| 5731 | NSP | Novosibirsk Aircraft Repair Plant, Joint-Stock Company | Callsign: Narpair, | RUS | AVCODES |
| 5732 | NSP | Samaritans Purse | Callsign: Sam Purse, | USA | AVCODES |
| 5733 | NSP | Novosibirsk Aircraft Repairing Plant | | | ICAO1 |
| 5734 | NSP | NORTHERN STATES POWER COMPANY | | | PWRC |
| 5735 | NSPA | NOBLE SHIPPING PVT LTD | | | SCAC4 |
| 5736 | NSPD | NORTH STAR PRODUCE | | | SCAC4 |
| 5737 | NSPE | NELSON PETROLEUM | | | SCAC4 |
| 5738 | NSPG | NESTA SHIPPING V O F | | | SCAC4 |
| 5739 | NSPH | NADEAUS PLUMBING & HEATING INC | | | SCAC4 |
| 5740 | NSPT | NON-STOP TRANSPORT INC | | | SCAC4 |
| 5741 | NSPX | Xcel Energy | added 1/2006 | | NAKINA |
| 5742 | NSPX | Northern States Power Co. | added 7/1990; 1/1994-7/2000; eliminated 1/2003; added 4/2005; 7/2005; eliminated 1/2006 | | NAKINA |
| 5743 | NSPX | Northern States Power Co. | added 7/90; 1/94-7/2000 | | NRHS |
| 5744 | NSPX | XCEL ENERGY [NORTHERN STATES POWER COMPANY] | | | PWRC |
| 5745 | NSPX | Northern States Power | | | RSRV |
| 5746 | NSPX | XCEL ENERGY | | | SCAC4 |
| 5747 | NSPZ | NORTHERN STATES POWER COMPANY | | | PWRC |
| 5748 | NSPZ | NORFOLK SOUTHERN RAILWAY | | | PWRC |
| 5749 | NSPZ | Norfolk Southern Railway | | | RSRV |
| 5750 | NSPZ | NORFOLK SOUTHERN RAILWAY COMPANY (N | | | SCAC4 |
| 5751 | NSQC | NEWFOUNDLAND SHIPPING CORP | | | SCAC3 |
| 5752 | NSQE | NINE ZERO SEVEN FIVE-NINE SIX THREE | | | SCAC4 |
| 5753 | NSQL | NAKILAT SHIPPING (QATAR) LIMITED | | | SCAC4 |
| 5754 | NSQP | NISSIN CORPORATION TOKYO JAPAN | | | SCAC3 |
| 5755 | NSQP | NISSIN CORPORATION | | | SCAC4 |
| 5756 | NSR | National Air Charter, PT. | Callsign: Nasair, | RI | AVCODES |
| 5757 | NSR | Sun Airlines | Callsign: Sun Airlines, | AM | AVCODES |
| 5758 | NSR | Nine Star Airways Co. Ltd. | Callsign: All Star, | T | AVCODES |
| 5759 | NSR | National Air Charter | | | ICAO1 |
| 5760 | NSR | Newburgh & South Shore R.R. Co. | added 7/1987; 1/1994-7/2005; eliminated 1/2006 | | NAKINA |
| 5761 | NSR | Newburgh & South Shore R.R. Co. | added 7/87; 1/94-7/2000 | | NRHS |
| 5762 | NSR | NEWBURGH & SOUTH SHORE RAILROAD COMPANY | | | PWRC |
| 5763 | NSR | Newburgh and South Shore Railroad | | | RSRV |
| 5764 | NSR | NEWBURGH & SOUTH SHORE RAILROAD COM | | | SCAC4 |
| 5765 | NSRA | NORTH STAR RANCH INC | | | SCAC4 |
| 5766 | NSRC | North Stratford R.R. Corp. | added 7/1979; 1/1980; eliminated 4/1988 | | NAKINA |
| 5767 | NSRC | North Stratford R.R. Corp. | added 7/79; 1/80; eliminated 4/88 | | NRHS |
| 5768 | NSRC | RETIRED 02-15-90 FET [NORTH STRATFORD RR] | | | PWRC |
| 5769 | NSRC | North Stratford Railroad | | | RSRV |
| 5770 | NSRC | NEW SERVICE TRANSPORT INC | | | SCAC4 |
| 5771 | NSRF | NYNAS SUPPLY & REFINING AB | | | SCAC3 |
| 5772 | NSRF | NORTH STAR TRANSFER | | | SCAC4 |
| 5773 | NSRG | NORTHWEST SIGN RECYCLING | | | SCAC4 |
| 5774 | NSRI | NORTHSTAR INTERNATIONAL | | | SCAC3 |
| 5775 | NSRK | N & S TRUCKING | | | SCAC3 |
| 5776 | NSRM | NEVADA STATE RAILROAD MUSEUM | | | PWRC |
| 5777 | NSRP | NORTHSTAR TRANSPORT INC | | | SCAC3 |
| 5778 | NSRP | NORTH STAR PIPE & TANK CO | | | SCAC4 |
| 5779 | NSRQ | NORTH SHORE RECYCLED FIBERS CORP | | | SCAC3 |
| 5780 | NSRR | NORFOLK SOUTHERN RAILWAY | | | SCAC4 |
| 5781 | NSRU | NAM SUNG SHIPPING CO LTD | | ROK | BIC |
| 5782 | NSRU | NAM SUNG SHIPPING CO LTD | | | SCAC4 |
| 5783 | NSRX | National Sugar Refining Co. | added 7/1953; 7/1954-1/1980; eliminated 10/1982 | | NAKINA |
| 5784 | NSRX | National Sugar Refining Co. | 10/57-1/80; eliminated 10/82 | | NRHS |
| 5785 | NSRX | *JACK FROST CANE SUGAR {NATIONAL SUGAR REFINING CO.] | | | PWRC |
| 5786 | NSRX | *NORTH STAR RAIL | | | PWRC |
| 5787 | NSRX | Jack Frost Cane Sugar | | | RSRV |
| 5788 | NSRX | FRIENDS OF THE 261 | | | SCAC4 |
| 5789 | NSS | Northstar Aviation | Callsign: Northstar, | USA | AVCODES |
| 5790 | NSS | Nesma Airlines | IATA: NE, Callsign: Nesma Connect, | SA | AVCODES |
| 5791 | NSS | Northstar Aviation | | | ICAO1 |
| 5792 | NSS | Newburgh and South Shore Ry. Co. | 4/1938-10/1966 & 1/1975-1/1980; eliminated 7/1986 | | NAKINA |
| 5793 | NSS | Newburgh and South Shore Ry. Co. | 4/38-10/66 & 1/75-1/80; eliminated 7/86 | | NRHS |
| 5794 | NSS | NEWBURG & SOUTH SHORE RAILROAD COMPANY | | | PWRC |
| 5795 | NSS | Newburgh and South Shore Railway | | | RSRV |
| 5796 | NSSA | NORTHERN STAR SHIPPING AGENCY | | | SCAC3 |
| 5797 | NSSA | NINE ZERO THREE SIX - SEVEN SEVEN F | | | SCAC4 |
| 5798 | NSSB | NEWLEAD SHIPPING SA | | | SCAC4 |
| 5799 | NSSD | N SPIRIT SHIPPING COMPANY LIMITED | | | SCAC4 |
| 5800 | NSSE | NINE ZERO SEVEN ZERO SEVEN ZERO EIG | | | SCAC4 |
