- Nabi
- Nabors Industries Incorporated
- Nalco Holding Company
- Napco Security Systems
- Napster Inc.
- Nara Bancorp Incorporated
- Nasdaq Stock Market Inc.
- Nashua Corporation
- Nathan's Famous
- National Australia Bank Limited
- National City Corporation
- National Financial Partners Corporation
- National Grid Plc
- National Lampoon Incorporated
- National Medical Health Card
- National Medical Health Card Systems Incorporated
- National Semiconductor Corporation
- National Steel Corporation
- National Westminster Bank
- Nationwide Financial Services Incorporated
- Natrol Incorporated
- Navarre Corporation
- Navigant Consulting Incorporated
- Navigant International Incorporated
- Navistar International Corporation
- NBC
- NBTY, Inc.
- NCR Corporation
- NEC Corporation
- Neenah Paper Incorporated
- Neiman Marcus Group
- Neptune Society Incorporated (The)
- NESN
- Nestle SA
- Netflix Inc.
- NetRatings Incorporated
- Netsmart Technologies Incorporated
- New Century Financial Corporation
- New Plan Excel Realty Trust Incorporated
- New York & Company Incorporated
- New York Community Bancorp Inc.
- New York Mercantile Exchange
- New York Stock Exchange
- New York Times
- Newcastle Investment Corporation
- Newell Rubbermaid Incorporated
- Newmont Mining Corporation
- News 12 Networks
- News Corp.
- Newtek Business Services Incorporated
- Nextel Partners Incorporated
- Niagara Bottling LLC
- Nicor Incorporated
- Nike Incorporated
- Nikon Corp
- Ning Inc.
- Nintendo Company Ltd.
- Nippon Steel Corporation
- Nisource Incorporated
- Nissan Motor Co.
- Nokia Corp.
- Nordstrom Incorporated
- Norfolk Southern Corporation
- Norsemont Mining Incorporated
- Nortel Networks Corporation
- North Fork Bancorp Incorporated
- Northeast Utilities
- Northern Trust Corporation
- Northfield Laboratories Incorporated
- Northrop Grumman Corp.
- Northrop Grumman Newport News
- Nova Scotia Power Incorporated
- Novartis
- Novell Incorporated
- Novellus Systems Incorporated
- NRG Energy Incorporated
- NTL Incorporated
- NTT DoCoMo Incorporated
- Nu Horizons Electronics Corp.
- Nu Skin Enterprises Incorporated
- Nucor Corporation
- NVR Incorporated