Diminutive of Penelope, from Greek mythology meaning weaver, Odysseus's faithful wife.
Penny began as a familiar English nickname for Penelope, the ancient Greek name borne by the faithful wife of Odysseus in Homer’s Odyssey. Penelope is traditionally linked to a Greek word for a kind of duck or weaver’s shuttle, though its precise origin has long been debated. Penny, by contrast, is simple and domestic in feel, shaped by English diminutive habits that turn longer names into warmer, everyday forms.
It also inevitably echoes the coin, giving it associations with brightness, luck, thrift, and the old saying "a penny for your thoughts," which has helped the nickname stand on its own. As a given name, Penny has long carried an approachable, cheerful image. It was especially visible in the mid-twentieth century, when nickname-style girls’ names such as Sally, Nancy, and Jenny flourished as formal names in their own right.
Popular culture has kept it alive in many forms, from comic strips and television to music and film, while literary-minded parents can still hear Penelope behind it, lending mythic depth to its friendliness. In recent years, Penny has benefited from the revival of vintage names: what once sounded merely cute can now sound brisk, bright, and knowingly retro. It feels less grand than Penelope but more intimate, with a sparkle that comes from both language and everyday life. That blend of classical ancestry and familiar charm explains why Penny can seem at once homespun and enduringly clever.