MWI Veterinary Supply (NASDAQ: MWIV) is an international animal health products supplier for veterinarians. The company is based in Boise, Idaho and distributes over 10,000 products to over 350 vendors throughout the US and the UK.

MWI Veterinary Supply was established by Millard Wallace Ickes in 1976. Initially known as MWI Holdings, the organization's name was changed in 2005. In 2011, the company acquired Nelson Laboratories Limited Partnership and Micro Beef Technologies. In the following year, it completed the acquisition of Prescription Containers Inc. In October 2013, the company tried the acquisition of substantially all of the assets of IVESCO Holdings. In November 2013, the company completed the acquisition of IVESCO Holdings.

In addition to direct distribution to vendors, the company has distribution contracts with Cornell University and US government. As of February 2014, it has an enterprise value of $2.17 billion. In September 2011, the customer base of the company included 24,000 veterinarian practices in the US and 1,500 in the UK. In fiscal year of 2011, the sales volume encompassed 3,500 products in the US and 21,000 products in the UK.

MWI was bought by AmerisourceBergen in a deal announced on January 12, 2015. It is no longer a public company and its shares do not actively trade on a public market. AmerisourceBergen has acquired it.