Short form of Violet or Vivian, from Latin 'viola' (violet) or 'vivus' (alive).
Vi functions as both a complete name and a vital abbreviation, and its history is richer for the ambiguity. As a standalone given name it has roots in Vietnamese culture, where Vĩ means 'great' or 'majestic' and Vi (vĩ) is a common element in compound names. In Western tradition Vi is most frequently a diminutive of Violet — from the Latin *viola*, the flower — or of Vivian, from the Latin *vivianus* meaning 'alive.'
Both source names were fashionable in the Victorian era, and Vi tripped easily off Edwardian tongues as an affectionate shortening. Violet was the name of several minor European royals and became a genuine literary darling: the heroine of Frances Hodgson Burnett's circle, a name favored by Romantic poets for its association with modesty and faithfulness (violets were the flower of that virtue). As Violet faded in mid-century America it took Vi with it, leaving the abbreviation in the hands of grandmothers.
Then came the remarkable late-twentieth century revival of botanical names, and Violet surged back — bringing Vi along not as a diminutive but as a standalone choice. There is also Vi's afterlife in mathematics and computing: *vi* is the foundational Unix text editor, giving the name a certain nerdy cool among programmers. In gaming culture, Vi is a beloved champion from *League of Legends* and a protagonist in the animated series *Arcane*, which gave the name a burst of cultural momentum in the 2020s. Short, bold, and cross-cultural, Vi now stands entirely on its own.