Mutual of Omaha is an insurance company based in Omaha, Nebraska. It has primarily sold health insurance and disability insurance; it also sells life insurance through a subsidary company, United of Omaha. At one time it was the primary marketer of travel-accident policies sold by vending machines in U.S. airports.

This company is probably best-known as the sponsor of the television wildlife program, Wild Kingdom, which is also and perhaps even better known as Mutual of Omaha's Wild Kingdom. The company is so associated with this program, which was aired for over two decades, that it is sometimes referred to in the insurance industry by the nickname "The Wild Kingdom".

The company is so well-known by the word "mutual", which describes its form of ownership, that it has had great problems doing what many other comparably-sized insurers have done in recent years, which is to "demutualize" and become a stock company which would give it access to capital markets. It has been proposed that the company be allowed to retain the name in this event and be styled, "Mutual of Omaha, A Stock Company", so that the name could not be considered to be in any way deceptive or misleading. It is also pointed out that other formerly mutually-owned companies such as Washington Mutual, a former savings and loan association, were allowed to keep this element of their name upon demutualization.