- La-Z-Boy Incorporated
- Laboratory Corporation of America Holdings
- Lafarge Corp.
- Lakeland Industries Inc.
- Lam Research Corporation
- Lamar Advertising Company
- Lancaster Colony Corporation
- Lance Incorporated
- LanChile SA
- Landauer Incorporated
- Landmark Communications Incorporated
- Langer
- Las Vegas Sands Corporation
- LaSalle Bank
- LaSalle National Corporation
- Laureate Education Incorporated
- Lawson Products Incorporated
- Lawson Software Incorporated
- Lazard Limited
- Lazare Kaplan International Incorporated
- Lear Corporation
- LECG Corporation
- LeCroy Corporation
- Lee Enterprises Incorporated
- Legg Mason, Inc.
- Leggett & Platt Incorporated
- LEGO Group
- Lehman Brothers Holdings Incorporated
- Lenovo Group
- Leucadia National Corporation
- Level 3 Communications Incorporated
- Levi Strauss & Co.
- Levitz Furniture Incorporated
- Liberty Bank
- Liberty Global Incorporated
- Liberty Media Corporation
- Liberty Property Trust
- Life Sciences Incorporated
- Life Time Fitness Incorporated
- LifeCell Corporation
- Lifetime Brands Inc.
- Lifeway Foods Incorporated
- LightPath Technologies Incorporated
- Lilly Eli & Co
- Lincoln Logs Limited
- Lincoln National Corporation
- LinkedIn Corp.
- Linn Energy Llc
- Lions Gate Entertainment Corporation
- Littelfuse Incorporated
- Littlefield Corporation
- Live Nation Incorporated
- Livent Incorporated
- Liz Claiborne Incorporated
- LM Ericsson Telephone Company
- Lockheed Martin Corporation
- Loehmann's Holdings Incorporated
- Loews Corporation
- Logistical Support
- LoJack Corporation
- Lone Star Steakhouse & Saloon Incorporated
- Long Island Commercial Bank
- Long Island Power Authority
- Longford Corporation
- Longs Drug Stores Corporation
- Louisiana-Pacific Corporation
- Lowe's Companies Incorporated
- LSI Corporation
- LTV Corporation
- Luby's Incorporated
- Lucent Technologies Incorporated
- Lutron Electronics Co., Inc.
- Luxottica Group SpA
- LVMH Moet Hennessy Louis Vuitton SA
- Lyondell Chemical Company