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50 Largest Indiana Private Companies

This is a list of the largest 50 private companies and/or business in Indiana.

Do It Best Corp. – A nationwide network of 4,100 hardware companies are a part of this Fort Wayne co-op. The company saves money through bulk buying with other member companies, and savings are then passed on to customers. For more than 60 years, Do It Best Corp. has been serving members and customers, while also participating in contributing to local communities.
Federal Home Loan Bank of Indianapolis – The largest source of home mortgage credit in the country are the twelve Federal Home Loan Banks. This lending superpower attempts to save members money by passing on the low rates of the co-op. This company is sponsored by the Federal Government, yet receives no Congressional appropriations, which helps maintain the company’s privately held status.
Hunt Construction Group Inc. – Dozens of downtown Indianapolis landmarks were built by Hunt Construction Group Inc., including Lucas Oil Stadium, Conseco Fieldhouse, the Conrad Hotel and Riley Hospital for Children. This company is one of the most reliable construction groups in the country, with seven regional offices located nationwide.
Petroleum Traders Corp. – This company is one of the largest wholesale diesel and gasoline fuel distributors in the United States. Petroleum Traders Corp. operates the country’s largest coast-to-coast pipeline, serving 39 states. In business since 1979, this privately held business has sustained many troubling times in the fuel industry.
Berry Plastics Corp. – Countless brand name products and companies rely on Berry Plastics Corp. for their bottling and packaging needs. Offering more than 1000 plastic molds for customers to choose from, this Evansville based company has seen continued growth and expansion for the past 40 years. There are more than 60 Berry Plastics Corp. manufacturing facilities and other locations worldwide.
Remy International – This world class company is a major manufacturer of electrical components and power equipment for automobiles, heavy duty vehicles and trucks. More than a century ago Remy International began by brothers Frank and Perry Remy. This large scale manufacturing company has more than 3,500 customers worldwide, and is affiliated with the parent company Delco Remy.
OneAmerica – Insuring Indiana families for more than 130 years, OneAmerica handles life insurance, employee benefits and retirement for customers and members. Since the 1980s, the OneAmerica tower has been a significant part of the Indianapolis skyline. It was the largest building in downtown Indianapolis until the Chase tower was built on Monument Circle.
Cook Group Inc. – What began as a small medical supply company based out of the founder’s apartment became a huge multinational distribution company. Cook Group Inc. is at the forefront of product development and medical research for diagnostic and therapeutic procedure technologies. Countless Hoosier hospitals and doctors rely on Cook Group Inc. products for the health care needs of their patients.
Rea Magnet Wire Co. Inc. – Almost every electrically operated product in the world uses magnet wire, and Rea Magnet Wire Co. Inc. is one of the largest producers of magnet wire in the United States. This Fort Wayne based company was founded in 1933. With facilities all over North America and China, the employee-owned business continues to grown and expand.
Atlas World Group Inc. – The largest interstate motor carrier in the United States is Atlas World Group Inc., a company that has offices in more than 140 countries. Relocation and transportation are the company’s specialties, and several Hoosier families rely on Atlas for their moving needs.
United Components Inc. – This company designs, manufactures and distrubutes a wide range of fuel & cooling systems products, engine management systems and filtration products for automotive, trucking, mining, construction, marine, agricultural and industrial clients. The business features a huge product line that consists of more than 60,000 parts.
Gregg Appliances Inc. – Nationally recognized as the leading seller of home appliances and consumer electronics, HH Gregg began as a small business in Indy in 1955. This family owned business was focused on solid customer service and fair prices.
Countrymark Cooperative Inc. – Indianapolis’ leader in private fuel production is Countrymark Cooperative Inc., which produces several types of diesel and gasoline. This company is responsible for the drilling, refining and distribution of their 100 percent American made fuels. Founded in 1920, this company has been making waves in Indianapolis for nearly a century.
The Bob Rohrman Auto Group – Headquartered in Lafayette, Indiana, this car dealership conglomerate justifiably claims to be the “Number one volume family-owned auto group in the entire Midwest.” With more than 25 dealerships offering name-brand new and used cars as well as auto parts, they just might be right.
Koch Enterprises Inc. – Beginning as a small tin shop in Indianapolis, Koch Enterprises Inc. is now a leader in several markets, including automotive parts manufacturing, wholesale distribution, metals recycling, equipment design and construction. Several subsidiary companies fall under the Koch umbrella, such as Gibbs Die Casting Corporation, Break Supply Company Incorporated, Koch Air LLC, George Koch Sons LLC and Audubon Metals LLC.
LDI Ltd. LLC. – This family owned investment and operating company owns two leading distribution companies, Tucker Rockey and FinishMaster. LDI Ltd. LLC is looking to acquire U.S. distribution or logistics companies. Not only is this company business savvy, but they are involved in the local community too. The business sponsors several Indianapolis racing events.
Jayco Corp. – Lloyd J. Bontrager set out to make the world a better RV in 1968, and today his dream company has grown to be one of the largest RV manufacturers in the world. A large network of more than 300 dealers operate all over the United States. The company has made significant advances in the industry, and its most recognized contribution to today’s RV was the lifter system Mr. Montrager developed for popup campers.
Indiana Farm Bureau Insurance – Auto, life, home, business and farm insurance are available at Indiana Farm Bureau Insurance. Origianally, the bureau was created to protect Hoosier farmers, but over time the business grew to a huge insurance guru all over the Circle City. Indiana Farm Bureau Insurance is heavily involved in Indianapolis sports, and the practice field for the Indianapolis Colts is called the Farm Bureau Football Center.
National Wine and Spirits Inc. – As Indiana’s largest beer and wine distributor, National Wine and Spirits Inc. processes more than 13,500 cases each day. This reliable Indiana based company has been in the alcohol distribution and sales business since the Prohibition, and today’s estimated annual sales reach over seven hundred billion dollars.
Lauth – This company is one of the largest real estate development companies in the United States, and has been in business for more than 30 years. Many Indianapolis attractions were built by Lauth, including several Indianapolis shopping malls and education facilities.
Herff Jones Inc. – This company has been helping families make memories and commemorate accomplishments for more than for nearly a century. Graduation materials, apparel and keepsakes are the specialty of Herff Jones Inc. Several Indianapolis high schools and Indiana colleges rely on this company for their yearbooks, class rings and graduation materials.
AM General LLC – Over the last 40 years, AM General LLC has produced more than a million Humvees for the use of the United States military. The company’s history stretches back to 1903, and over time they have produced several standard automobile models, including the Jeep and the Hummer. The popular Hummer brand is now operated by General Motors, but AM General LLC continues to support American troops by producing heavy duty military vehicles.
Aearo Co. – This company produces consumer safety, industrial safety and energy absorbing materials. Vision, hearing, respiratory, face and head protection gear and devices are major sellers on the Aearo Co. product lines. Aearo is the parent company for two major brands, AOSystems and E-A-R.
Crowe Group LLP – A reliable source for Indianapolis businesses and residents for tax, risk, audit and consulting services is Crowe Group LLP. It is one of the top 10 accounting firms in the United States, with locations throughout the midwest, in Michigan and Indiana. In 2006 and 2007 Crowe Group LLP was named twice by the Indiana Chamber of Commerce as one of the best places to work in the state.
Vertellus Specialties Inc. – Chemicals produced by this company are used in several markets, including personal care, pharmeceutical & medical, polymers & plastics, sealants & adhesives, inks, coating and agriculture products. Vertellus Specialties Inc. is perhaps best known for their work with the bug repellant deet.
F.A. Willheim Construction Co. Inc. – The largest employer of construction labor in the state of Indiana is F.A. Wilhelm Construction Co. Inc. This company has built several Indianapolis landmarks, including several business structures downtown and university buildings throughout the state.
Norwood Promotional Products – A huge product line of more than 5,000 items makes Norwood Promotional Products one of the largest distributors of promotional products. The company makes trinkets and toys, flyers and ads and a variety of other imprinted materials, but there is a special line for golfing apparel and supplies.
Kirby Risk Corp. – Article Soon.
MacAllister Machinery Co. Inc. – For four generations, the MacAllister family has been Indiana’s leading supplier of heavy equipment. Caterpillar brand construction, mining, landscaping and agriculture equipment have been sold by the MacAllister Machinery Co. Inc. for more than 60 years.
Stoops Freightliner – What began as a one man trucking operation became one of the largest freightliner dealers in the nation. Stoops is located on Indy’s southside, and has six retail locations throughout the midwest.
Newmar Corp. – One of Indiana’s leading dealers of motor homes, luxury motor homes and fifth wheels is Newmar Corp. The company’s products were made by RV people, for RV people. Hundreds of Hoosiers rely on this large scale RV dealer year after year for their vacation and travel needs.
Kelley Automotive Group – Article Soon.
The Hagerman Group – Beautiful Indianapolis structures, such as the Artsgarden and Ben Davis High School were built by this large scale construction company. The Hagerman family has owned this business for four generations, and they take special interest in environmentally friendly construction methods.
Telamon Corp. – This large business helps companies to streamline business operations through telecommunications services. Telamon Corp. plays a big part in Indianapolis society by participating in community events and advocating for local businesses. For six years in a row the company has been ranked as one of the 500 fastest growing companies in the United States.
JBS United Inc. – This company had humble beginnings in the 1956, and its now one of the industry’s largest contributors to research based animal nutritional products, grain merchandising, livestock production and environmental consulting services.
Jasper Engines and Transmissions – The nations largest remanufacturer of gas and diesel engines, transmissions, differentials, real axle assemblies, marine engines, stern drives performance engines and electric motors is Jasper Engines and Transmissions. The company is able to take part in preserving the environment by helping customers to reduce, reuse and recycle vehicle parts.
Ray Skillman Auto Centers – Article Soon.
IS. Group – This large scale co-operation of office supply companies brings more than 250 private businesses together. At a time when corporations are taking over the office supply industry, small businesses are able to stay afloat and pass on low costs to customers. Member companies include retailers of all types of office supplies, furniture, computer & IT supplies, printing services, school supplies and janitorial & breakroom supplies.
Best Chairs Inc. – In 1962 this small chair company was founded, and it continued to grow into one of the world’s largest furniture manufacturers. Today, Best Chairs Inc. goes by the name Best Home Furnishings. The name change was made to better describe the company’s product line, which was expanded to include tables and sofas.
Shiel Sexton Co. Inc. – Dozens of Indianapolis attractions have been built or renovated by Shiel Secton Co. Inc. Countless projects have been conducted for Indiana colleges and other downtown facilities, such as Methodist Hospital, Eli Lilly and Co., Indianapolis International Airport, Conseco Fieldhouse and the Children’s Museum of Indianapolis, just to name a few. Since 1962, this family owned business has been making Indiana history.
Prime Care Properties LLC – In 1993, three men began Prime Care Properties LLC in order to find creative solutions for the physical, recreational, social and emotional needs of the elderly population. The Indianapolis business operates as a network of companies that own assisted living facilities or simply provide administrative oversight and assist leaders with turn-around for distressed properties.
Kokomo Grain Co. Inc. – Many foods, soft drinks and animal feeds are made from Kokomo Grain Co. Inc. products. Corn, soybeans and wheat are the major products distributed by the company. The business also runs a very comprehensive Web site for customers that features all the latest prices and news in the agriculture industry.
Gates Automotive Group – Article Soon.
OmniSource Corp.For more than 65 years, OmniSource Corp. has been the expert on Indiana’s scrap metal. The company handles processing & transportation, marketing & brokerage and management & consulting for scrap metal recycling. Based out of Fort Wayne, OmniSource Corp. is one of the largets scrap recycling companies in North America.
Gene B. Glick Company – has had an important influence on Indianapolis business: not only in successful deals and income, but also in philanthropy and ethical business practices. The Gene B. Glick Company develops, sells, and manages property and real estate throughout ten states.