Helvetica became closely associated with McDonald's corporate branding after its 1960s redesign.
McDonald's visual identity expanded beyond the Golden Arches as the company standardized signs, menus, packaging, and printed communication. A clean sans-serif type style supported the brand's emphasis on consistency, legibility, and modernity during its rapid growth.
Helvetica was widely used in corporate and commercial design during the period, and its association with McDonald's helped create a coherent look across many applications. The typeface worked alongside the arches rather than replacing them: the arches served as the main symbol, while typography carried restaurant names, menus, and supporting messages.
This fact is sometimes blurred with later custom lettering and market-specific design systems. McDonald's branding changed over time, but Helvetica is the typeface most specifically linked with the company's classic corporate identity during the late twentieth century.