Z103

Z103 is a designation used by multiple broadcasting outlets and other entities, rather than a single, unified organization. In radio, Z103 is a branding that has been adopted by several FM stations in North America, often in Canada and the United States, typically presenting contemporary hit or pop formats. The "Z" is a common branding element implying a modern, youthful image, while "103" often references the approximate FM frequency in the 103.x MHz range or simply serves as a memorable brand identifier. The actual call signs, licensed frequencies, and ownership of stations using the Z103 branding vary by market, and each station operates under its own legal license.

Because the branding is market-specific, there is no single Z103 station. Each station that uses the name may have different programming, logos, and on-air personalities, and the brand can change hands or be retired in local markets.

Beyond broadcasting, Z103 can appear as a model or product code in other industries and may refer to non-broadcast identifiers. The use of similar alphanumeric brands (such as Z100) reflects a common marketing approach to create a recognizable, easy-to-remember name. Z103 showcases how radio branding often transcends a single frequency, enabling stations to reuse a familiar name across regions while maintaining distinct licenses and operations.