| $350,000–1 million | INTEGRATED ARCHITECTURE, L.L.C. | GRAND RAPIDS, MI | Horizon Bank |
| $350,000–1 million | INTEGRITY BUSINESS SOLUTIONS, LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | INTERNAL MEDICINE AND PEDIATRICS OF WEST MICHIGAN | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | INTERNAL MEDICINE OF WEST MICHIGAN, PLLC | GRAND RAPIDS, MI | Fifth Third Bank |
| $150,000–350,000 | INTERNATIONAL SOCIETY OF PRIMERUS LAW FIRMS, LTD | GRAND RAPIDS, MI | Old National Bank |
| $350,000–1 million | INTERNATIONAL TONER COMPANY, LLC | GRAND RAPIDS, MI | Village Bank and Trust, National Association |
| $150,000–350,000 | INTERPHASE OFFICE INTERIORS, INC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | ITASCAB PARTNERS, LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $1–2 million | ITS PARTNERS LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | J & L ROOFING CO. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | J&K DOWNTOWN LLC | GRAND RAPIDS, MI | Union Bank |
| $150,000–350,000 | J. E. MANAGEMENT SERVICES, INC. | GRAND RAPIDS, MI | Union Bank |
| $350,000–1 million | J. HANSEN-BALK STEEL TREATING CO. | GRAND RAPIDS, MI | Macatawa Bank |
| $350,000–1 million | JACK DYKSTRA EXCAVATING INC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | JACOBSON HEATING COOLING | GRAND RAPIDS, MI | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | JAMES C PAPP DMD PLC | GRAND RAPIDS, MI | Cross River Bank |
| $150,000–350,000 | JB REAL ESTATE DEVELOPMENT LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | JD GENERAL AGENCY, LLC | GRAND RAPIDS, MI | Macatawa Bank |
| $150,000–350,000 | JDV II, LLC | GRAND RAPIDS, MI | Fifth Third Bank |
| $2–5 million | JEDCO, INC. | GRAND RAPIDS, MI | Macatawa Bank |
| $150,000–350,000 | JELSEMA CONCRETE CONSTRUCTION, INC. | GRAND RAPIDS, MI | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | JENNY TRANSPORTATION LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | JERRY BOS VENDING SERVICE, INC. | GRAND RAPIDS, MI | Macatawa Bank |
| $150,000–350,000 | JEUP, INC. | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | JFJ CONSTRUCTION SERVICES, INC. | GRAND RAPIDS, MI | Macatawa Bank |
| $350,000–1 million | JG LOGISTICS LLC | GRAND RAPIDS, MI | PNC Bank, National Association |
| $350,000–1 million | JHG HOLDINGS LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | JIM LEACH LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | JKG, INC. | GRAND RAPIDS, MI | Old National Bank |
| $1–2 million | JOHN BALL ZOO | GRAND RAPIDS, MI | Fifth Third Bank |
| $350,000–1 million | JOHN K. BURCH COMPANY | GRAND RAPIDS, MI | Fifth Third Bank |
| $150,000–350,000 | JOHN LAGRAND, MD PLC | GRAND RAPIDS, MI | PNC Bank, National Association |
| $150,000–350,000 | JOHNNY NOTO'S, INC. | GRAND RAPIDS, MI | United Bank of Michigan |
| $350,000–1 million | JONATHAN STEVENS MATTRESS COMPANY | GRAND RAPIDS, MI | Fifth Third Bank |
| $350,000–1 million | JOOST VAPOR LLC | GRAND RAPIDS, MI | Bank of America, National Association |
| $350,000–1 million | JTS PIZZA INC | GRAND RAPIDS, MI | PNC Bank, National Association |
| $150,000–350,000 | JTS PIZZA INC | GRAND RAPIDS, MI | PNC Bank, National Association |
| $350,000–1 million | JUDE'S BARBERSHOP INC. | GRAND RAPIDS, MI | Macatawa Bank |
| $150,000–350,000 | JULIE R. VANHOOSE, D.M.D. AND KYLE GIES, D.D.S., P.C. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | JUNIOR ACHIEVEMENT OF THE MICHIGAN GREAT LAKES, INC | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | JW RABIDEAU, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | K & E HOTELS LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $2–5 million | K.J. STEDMAC, LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | K5 RESTAURANTS LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | KAMP OIL, INC. | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | KAMPS SIDING AND EXTERIORS, LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | KATERBERG VERHAGE, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | KDAB, INC. | GRAND RAPIDS, MI | Old National Bank |
| $150,000–350,000 | KELLER & ALMASSIAN PLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | KELLER FORD, INC. | GRAND RAPIDS, MI | ChoiceOne Bank |
| $350,000–1 million | KELLEY DEWATERING AND CONSTRUCTION COMPANY | GRAND RAPIDS, MI | Macatawa Bank |
| $2–5 million | KENDRICK PLASTICS, INC | GRAND RAPIDS, MI | Comerica Bank |
| $350,000–1 million | KENNEDY ACQUISITION, INC. | GRAND RAPIDS, MI | First National Bank of Michigan |
| $1–2 million | KENONA INDUSTRIES, LLC | GRAND RAPIDS, MI | CIBC Bank USA |
| $150,000–350,000 | KENT FAMILY DENTAL CARE PC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | KENT MANUFACTURING COMPANY | GRAND RAPIDS, MI | Fifth Third Bank |
| $350,000–1 million | KENT SCHOOL SERVICES NETWORK | GRAND RAPIDS, MI | Old National Bank |
| $350,000–1 million | KENTWOOD COMMUNITY WESLEYAN CHURCH | GRAND RAPIDS, MI | Macatawa Bank |
| $150,000–350,000 | KENTWOOD DENTAL ASSOCIATES, P.C. | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | KENTWOOD EXCAVATING INC. | GRAND RAPIDS, MI | Fifth Third Bank |
| $350,000–1 million | KENTWOOD EXCAVATING, INC. | GRAND RAPIDS, MI | Fifth Third Bank |
| $150,000–350,000 | KENTWOOD PLUMBING & HEATING, INC. | GRAND RAPIDS, MI | West Michigan Community Bank |
| $350,000–1 million | KENTWOOD POWDER COAT, INC. | GRAND RAPIDS, MI | ChoiceOne Bank |
| $150,000–350,000 | KEYSTONE PHARMACY, INC. | GRAND RAPIDS, MI | Horizon Bank |
| $350,000–1 million | KIDS FOOD BASKET | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | KINDEL FURNITURE COMPANY LLC | GRAND RAPIDS, MI | Old National Bank |
| $150,000–350,000 | KING & MACGREGOR ENVIRONMENTAL, INC. | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | KIRCHHOFF ENTERPRISES, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | KLEYN ELECTRIC, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | KLINGMAN'S FURNITURE & DESIGN LLC | GRAND RAPIDS, MI | First National Bank of Michigan |
| $150,000–350,000 | KNAPP VALLEY LANDSCAPING, INC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | KOENES AUTO BODY INC | GRAND RAPIDS, MI | Mercantile Bank |
| $1–2 million | KOOL CHEVROLET, INC. | GRAND RAPIDS, MI | Macatawa Bank |
| $350,000–1 million | KRAFT BUSINESS SYSTEMS INC. | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | KREGEL, INC. | GRAND RAPIDS, MI | Fifth Third Bank |
| $350,000–1 million | KRIEGER CRAFTSMEN, INC. | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | KRISPAK INC. | GRAND RAPIDS, MI | Comerica Bank |
| $350,000–1 million | KRISPAK, INC. | GRAND RAPIDS, MI | Comerica Bank |
| $350,000–1 million | KRUPP INDUSTRIES, LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | KUYPER COLLEGE | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | LACH DIAMOND, INC. | GRAND RAPIDS, MI | PNC Bank, National Association |
| $150,000–350,000 | LAKE MICHIGAN DENTAL, PC | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | LAKELAND PALLETS | GRAND RAPIDS, MI | The Huntington National Bank |
| $1–2 million | LAMBERT & CO. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | LANDON, LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | LASER ACCESS LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | LAW OFFICES DAVID L. CARRIER, P.C. | GRAND RAPIDS, MI | Old National Bank |
| $150,000–350,000 | LEACH FOOD EQUIPMENT DISTRIBUTORS, LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | LEAD MARKETING AGENCY, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | LEEDY MFG CO LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | LEGACY STEEL LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $350,000–1 million | LEGACY TRUST | GRAND RAPIDS, MI | Sturgis Bank & Trust Company |
| $350,000–1 million | LEGAL COPY SERVICES, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | LEIGH'S OF WESTERN MICHIGAN, INC. | GRAND RAPIDS, MI | Fifth Third Bank |
| $5–10 million | LEISURE LIVING MANAGEMENT, INC. | GRAND RAPIDS, MI | United Bank of Michigan |
| $150,000–350,000 | LEONARD J. BARTOSZEWICZ DDS | GRAND RAPIDS, MI | Old National Bank |
| $150,000–350,000 | LETTINGA BUSINESS SERVICES LLC | GRAND RAPIDS, MI | The Huntington National Bank |
| $150,000–350,000 | LETTY CORP | GRAND RAPIDS, MI | PNC Bank, National Association |
| $2–5 million | LIGHTHOUSE INSURANCE GROUP, INC | GRAND RAPIDS, MI | Macatawa Bank |
| $150,000–350,000 | LINC UP NONPROFIT HOUSING CORP | GRAND RAPIDS, MI | The Huntington National Bank |