| American Council of Engineering Companies of Indiana, Inc.: A professional trade association of Indiana's premier consulting engineering firms. |
| APICS Michiana: The Indiana and Michigan chapter of a group for inventory and production control managers offers downloadable application forms. |
| Asphalt Pavement Association of Indiana: Trade association for asphalt pavement producer contractors. Features news, technical data, scholarships, and related links. |
| Associated Builders and Contractors: A professional construction trade association dedicated to the merit shop philosophy and to the free enterprise system. |
| Associated General Contractors: Member services include safety training, labor relations advice and insurance. |
| Indiana Association of Building Officials, Inc.: A not-for-profit organization committed to the development of those charged with the life safety provision of building related codes. |
| Indiana Chamber of Commerce: Includes business news, membership benefits, conference information, and information on legislation. |
| Indiana Credit Union League: An association of credit unions with information on credit unions, job opportunities, locations and contacts. |
| Indiana Grantmakers Alliance: A resource dedicated to advancing philanthropy throughout Indiana. |
| Indiana Manufacturers Association - 2002: Represents manufacturing concerns before state legislative bodies, provides consulting services and professional development workshops and publications. |
| Indiana Retail Council: A state wide trade association that repersents the interest of retailers before the Indiana General Assembly. |
| Indiana Small Business Development Corporation: Assisting with small business development and growth with information on marketing, women in business, minority owners, small business incubators and loans. |
| Indiana Telecommunications Association (ITA): A non-profit trade association representing the telecommunications industry. |
| Indiana's Health Industry Forum: A not-for-profit organization working to position Indiana as a premier state for the creation and growth of health industry enterprises. |
| Northwest Indiana Small Business Development Center: Aim to create, or keep, jobs in the region by assisting small businesses. Includes information on resources, special events, training programs, partners and sponsors. |
| The Indiana Bowling Centers Association (IBCA): A state wide association of bowling centers. |
| The Mechanical Contractor's Association of Indiana: A statewide trade association established to represent and service its members in the mechanical industry. |