A logo is a graphical element (ideogram, symbol, emblem, icon, sign) that, together with its logotype (a uniquely set and arranged typeface) form a trademark or commercial brand. Typically, a logo's design is for immediate recognition. The logo is one aspect of a company's commercial brand, or economic or academic entity, and its shapes, colors, fonts, and images usually are different from others in a similar market. Logos are also used to identify organizations and other non-commercial entities.

Today there are many corporations, products, services, agencies and other entities using an ideogram (sign, icon) or an emblem (symbol) or a combination of sign and emblem as a logo. As a result, only a few of the thousands of ideograms people see are recognized without a name. It is sensible to use an ideogram as a logo, even with the name, if people will not duly identify it. Currently, the usage of both images (ideograms) and the company name (logotype) to emphasize the name instead of the supporting graphic portion, making it unique by its letters, color, and additional graphic elements.

A brand is a name or trademark connected with a product or producer. Brands have become increasingly important components of culture and the economy, now being described as "cultural accessories and personal philosophies".

Some people distinguish the psychological aspect of a brand from the experiential aspect. The experiential aspect consists of the sum of all points of contact with the brand and is known as the brand experience. The psychological aspect, sometimes referred to as the brand image, is a symbolic construct created within the minds of people and consists of all the information and expectations associated with a product or service.