Vesko is a Bulgarian diminutive of Veselin, a name derived from the South Slavic root vesel, meaning "cheerful." It is typically given to boys as a familiar or affectionate form, similar to how nicknames are used in many cultures.
The root name Veselin is common in Bulgaria, Serbia, and other South Slavic countries, often associated with positive personality traits like joy and optimism. Vesko retains this cheerful connotation but carries a more informal, endearing tone. While Veselin itself is used as a formal given name, Vesko is more common in everyday settings, within families and social circles.
Vesko may appear in various cultural contexts, including literature and media, where it is used to suggest friendliness and approachability. Notable bearers are less documented internationally, reflecting its local prevalence.