Kassidy

Kassidy as a masculine name represents a contemporary gender crossover from what has become predominantly feminine usage. Derived from the Irish surname Ó Caiside, meaning 'descendant of Caiside' (where Caiside relates to 'curly-haired'), the name emerged in America as a given name in the late 20th century. While initially used for both genders, Kassidy has trended more feminine since the 1990s, though some boys still receive this name. The spelling with 'K' and double 's' distinguishes it from Cassidy, offering a slightly more distinctive variation. For boys, Kassidy carries a modern, energetic quality while maintaining connections to Irish heritage. Parents choosing Kassidy for boys may appreciate its melodic sound and cultural roots while embracing its relative uniqueness in masculine usage.

Pronounced KAS-i-dee.

As of October 2026, Kassidy ranked #10193 in US births in 2025 SSA, peaked at #3875 in 1990.