| $2–5 million | LUCAS ASSOCIATES TEMPS, INC. | ATLANTA, GA | Fifth Third Bank |
| $350,000–1 million | LUCI CREATIVE, LLC | LINCOLNWOOD, IL | Fifth Third Bank |
| $150,000–350,000 | LUCIDO FINE JEWELRY, INC. | STERLING HTS, MI | Fifth Third Bank |
| $350,000–1 million | LUCKY SHOES, INC | FAIRLAWN, OH | Fifth Third Bank |
| $150,000–350,000 | LUMEN CARDIOVASCULAR SPECIALISTS, LTD. | ELMHURST, IL | Fifth Third Bank |
| $350,000–1 million | LUMIMOVE INC | OAK CREEK, WI | Fifth Third Bank |
| $1–2 million | LUMINA SHARED SERVICES, LLC | NASHVILLE, TN | Fifth Third Bank |
| $350,000–1 million | LUNNE MARKETING GROUP, INC | DAYTON, OH | Fifth Third Bank |
| $350,000–1 million | LUTHERAN ADOPTION SERVICE, INC. | DETROIT, MI | Fifth Third Bank |
| $2–5 million | LUTHERAN CHILD & FAMILY SERVICES OF MICHIGAN, INC. | FLINT, MI | Fifth Third Bank |
| $2–5 million | LUTHERAN HOMES OF MICHIGAN INC | FLINT, MI | Fifth Third Bank |
| $350,000–1 million | LUX INTERACTIVE LLC | TROY, MI | Fifth Third Bank |
| $350,000–1 million | LX TRANS INC | PARK RIDGE, IL | Fifth Third Bank |
| $150,000–350,000 | LYNNHAVEN INN, INC | HALLANDALE BEACH, FL | Fifth Third Bank |
| $150,000–350,000 | LYONS ELECTRICAL SUPPLY CO | DAYTON, OH | Fifth Third Bank |
| $350,000–1 million | LYRA & FAMILY, INC. | WADSWORTH, IL | Fifth Third Bank |
| $350,000–1 million | M & C ENTERPRISES OF SEBRING, INC. | ORLANDO, FL | Fifth Third Bank |
| $150,000–350,000 | M & J LOGISTICS ILLINOIS, INC. | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | M & M TRANSPORTATION SERVICES LLC | DES PLAINES, IL | Fifth Third Bank |
| $1–2 million | M & O ENVIRONMENTAL COMPANY | EAST HAZEL CREST, IL | Fifth Third Bank |
| $1–2 million | M & R HIGH POINT HOLDINGS, INC. | COCOA, FL | Fifth Third Bank |
| $350,000–1 million | M C MOLDS, INC. | WILLIAMSTON, MI | Fifth Third Bank |
| $2–5 million | M D LOGISTICS, INC. | PLAINFIELD, IN | Fifth Third Bank |
| $2–5 million | M&O INSULATION COMPANY | EAST HAZEL CREST, IL | Fifth Third Bank |
| $350,000–1 million | M-A BUILDING AND MAINTENANCE COMPANY | INDEPENDENCE, OH | Fifth Third Bank |
| $350,000–1 million | M-PACT CORPORATION | CINCINNATI, OH | Fifth Third Bank |
| $150,000–350,000 | M-TL INC | SANDUSKY, OH | Fifth Third Bank |
| $150,000–350,000 | M. C. STEEL AND CRANE SERVICE, INC | ALEXANDRIA, KY | Fifth Third Bank |
| $150,000–350,000 | M. E. OLSON CONSTRUCTION, INC. | ELMHURST, IL | Fifth Third Bank |
| $150,000–350,000 | M. GAY CONSTRUCTORS, INC. | JACKSONVILLE, FL | Fifth Third Bank |
| $350,000–1 million | M. LIZEN MANUFACTURING CO. | UNIVERSITY PARK, IL | Fifth Third Bank |
| $150,000–350,000 | M.J.M. OPERATING CORP. | BROOKLYN, NY | Fifth Third Bank |
| $350,000–1 million | M3CVP CLUBHOUSE OAKBROOK LLC | OAK BROOK, IL | Fifth Third Bank |
| $2–5 million | MAC GROUP INTERNATIONAL INCORPORATED | DETROIT, MI | Fifth Third Bank |
| $350,000–1 million | MAC MACHINE & METAL WORKS INC | CONNERSVILLE, IN | Fifth Third Bank |
| $150,000–350,000 | MACDERMOTT ROOFING, INC. | LIVONIA, MI | Fifth Third Bank |
| $150,000–350,000 | MACDONALD SUPPLY, INC | FINDLAY, OH | Fifth Third Bank |
| $150,000–350,000 | MACHMER HALL THOROUGHBREDS, LLC | PARIS, KY | Fifth Third Bank |
| $350,000–1 million | MACK & ASSOCIATES LTD | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | MACKSOOD'S, INC. | FLUSHING, MI | Fifth Third Bank |
| $350,000–1 million | MACLEOD CONSTRUCTION, INC. | CHARLOTTE, NC | Fifth Third Bank |
| $350,000–1 million | MACMILLAN, SOBANSKI & TODD, LLC | TOLEDO, OH | Fifth Third Bank |
| $5–10 million | MACOMB OAKLAND REGIONAL CENTER, INC | CLINTON TOWNSHIP, MI | Fifth Third Bank |
| $150,000–350,000 | MACOMB ORTHODONTICS, PLLC | MACOMB, MI | Fifth Third Bank |
| $150,000–350,000 | MADEIRA STATION LLC | CINCINNATI, OH | Fifth Third Bank |
| $350,000–1 million | MADISON MANUFACTURING COMPANY | HOT SPRINGS, NC | Fifth Third Bank |
| $350,000–1 million | MAGDICH & ASSOCIATES, P.C. | LIVONIA, MI | Fifth Third Bank |
| $350,000–1 million | MAGNANI & ASSOCIATES ADVERTISING, INC. | CHICAGO, IL | Fifth Third Bank |
| $350,000–1 million | MAGNATONE HEARING AID CORPORATION | CASSELBERRY, FL | Fifth Third Bank |
| $1–2 million | MAGNI INDUSTRIES, INC. | BIRMINGHAM, MI | Fifth Third Bank |
| $350,000–1 million | MAGNOLIA CAPITAL MANAGEMENT COMPANY INC | CHICAGO, IL | Fifth Third Bank |
| $350,000–1 million | MAGNUM HOSPITALITY, INC. | WILLIAMSBURG, MI | Fifth Third Bank |
| $350,000–1 million | MAGNUSON GROUP INC. | WOODRIDGE, IL | Fifth Third Bank |
| $150,000–350,000 | MAHAN & PETE FAMILY DENTISTRY, P.C. | GREENWOOD, IN | Fifth Third Bank |
| $350,000–1 million | MAHANTECH CORPORATION | CHARLESTON, WV | Fifth Third Bank |
| $150,000–350,000 | MAIL IT CORP. OF TOLEDO | TOLEDO, OH | Fifth Third Bank |
| $350,000–1 million | MAIN LINE SUPPLY CO. INC | DAYTON, OH | Fifth Third Bank |
| $150,000–350,000 | MAINE DENTAL LAB, INC. | MOUNT PROSPECT, IL | Fifth Third Bank |
| $350,000–1 million | MAJOR APPLIANCE SERVICE, INC. | LYONS, IL | Fifth Third Bank |
| $2–5 million | MAKE CORPORATION | OAK BROOK TERRACE, IL | Fifth Third Bank |
| $150,000–350,000 | MAKO METALS, INC. | OLYMPIA FIELDS, IL | Fifth Third Bank |
| $150,000–350,000 | MAKO RECYCLE, INC. | NASHVILLE, TN | Fifth Third Bank |
| $1–2 million | MALLARD CREEK POLYMERS LLC | CHARLOTTE, NC | Fifth Third Bank |
| $150,000–350,000 | MALY FAMILY ENTERPRISES, INC. | KENTWOOD, MI | Fifth Third Bank |
| $150,000–350,000 | MAMA DISALVO'S RESTAURANT, INC | KETTERING, OH | Fifth Third Bank |
| $150,000–350,000 | MAMA LAROSA FOODS INC | TAYLOR, MI | Fifth Third Bank |
| $350,000–1 million | MANAGEABILITY, INC | NOVI, MI | Fifth Third Bank |
| $150,000–350,000 | MANAGEMENT GROUP RS, INC. | GIBSONTON, FL | Fifth Third Bank |
| $350,000–1 million | MANAGEMENT RESEARCH SERVICES, INC. | BROOKFIELD, WI | Fifth Third Bank |
| $2–5 million | MANAR, INC | EDINBURGH, IN | Fifth Third Bank |
| $150,000–350,000 | MANDELL MENKES LLC | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | MANHEAD LLC | NASHVILLE, TN | Fifth Third Bank |
| $350,000–1 million | MANN. WEITZ & ASSOCIATES L.L.C. | DEERFIELD, IL | Fifth Third Bank |
| $350,000–1 million | MANNING EQUIPMENT LLC | LOUISVILLE, KY | Fifth Third Bank |
| $2–5 million | MANPOWER INCORPORATED OF TOLEDO | TOLEDO, OH | Fifth Third Bank |
| $150,000–350,000 | MANUWEST INC. | NORTHBROOK, IL | Fifth Third Bank |
| $350,000–1 million | MAPLE LEAF ESTATES HOMEOWNERS CORPORATION | PORT CHARLOTTE, FL | Fifth Third Bank |
| $350,000–1 million | MAPLE MANOR NURSING AND REHAB LLC | ROCHESTER, MN | Fifth Third Bank |
| $150,000–350,000 | MAR VEL TOOL CO INC. | DAYTON, OH | Fifth Third Bank |
| $150,000–350,000 | MAR-RO OPERATING CORP | BROOKLYN, NY | Fifth Third Bank |
| $150,000–350,000 | MARC J. SHUMAN & ASSOCIATES, LTD. | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | MARCEL MEDIA LLC | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | MARCH AVIATION, INC. | NAPLES, FL | Fifth Third Bank |
| $350,000–1 million | MARCO ISLAND TILE & MARBLE INC | MARCO ISLAND, FL | Fifth Third Bank |
| $350,000–1 million | MARCO RIVER MARINA, INC. | MARCO ISLAND, FL | Fifth Third Bank |
| $350,000–1 million | MARCO SUPPLY COMPANY, INC. | CHICAGO, IL | Fifth Third Bank |
| $2–5 million | MARIANIST PROVINCE OF THE UNITED STATES | SAINT LOUIS, MO | Fifth Third Bank |
| $2–5 million | MARIANNA INDUSTRIES, INC. | OMAHA, NE | Fifth Third Bank |
| $150,000–350,000 | MARINE JET POWER, INC. | BLACKLICK, OH | Fifth Third Bank |
| $350,000–1 million | MARION CARE LEASING LLC | BEACHWOOD, OH | Fifth Third Bank |
| $150,000–350,000 | MARIS CONSTRUCTION I LLC | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | MARK A. LUPO, M.D., P.A. | SARASOTA, FL | Fifth Third Bank |
| $150,000–350,000 | MARK A. PIPER, D.M.D., M.D., P.A. | SAINT PETERSBURG, FL | Fifth Third Bank |
| $150,000–350,000 | MARK B. LONSTEIN, M.D., P.A. | SARASOTA, FL | Fifth Third Bank |
| $150,000–350,000 | MARK TOOL & DIE COMPANY INC. | COMMERCE TOWNSHIP, MI | Fifth Third Bank |
| $350,000–1 million | MARK WOODMAN PLUMBING & HEATING, INC. | SUNFIELD, MI | Fifth Third Bank |
| $150,000–350,000 | MARKESBERY & RICHARDSON CO., A LEGAL PROFESSIONAL ASSOCIATION | CINCINNATI, OH | Fifth Third Bank |
| $150,000–350,000 | MARKET READY INC | ROUND LAKE PARK, IL | Fifth Third Bank |
| $350,000–1 million | MARKETING & TECHNOLOGY GROUP INC. | CHICAGO, IL | Fifth Third Bank |
| $150,000–350,000 | MARKETING SOLUTIONS INC. AND DESIGN | CHICAGO, IL | Fifth Third Bank |