Bangkok Purple is a boutique, regionally referenced cannabis cultivar whose name points to a modern Thai connection and a distinct violet coloration. While not yet enshrined in the catalogs of major international seed banks, the strain has circulated in Bangkok’s post-2022 decriminalization craft scene and across online forums and menus under varying labels such as “Bangkok Purple,” “Purple Bangkok,” and occasionally “Bangkok Grape.” Because verified public lab reports are scarce, much of what is known comes from grower logs, dispensary notes, and regional anecdotes, supplemented by data from comparable purple and Thai-lineage cultivars. As a purple-forward hybrid with likely Southeast Asian ancestry, Bangkok Purple is typically described as a balanced or sativa-leaning hybrid presenting deep magenta calyxes, resinous trichome coverage, and a sweet-floral aroma with herbal spice. Consumers frequently characterize the high as clear but expansive, with an uplifting onset transitioning to tranquil body ease after 60–90 minutes. In markets where it appears, potency claims often cluster in the moderate-to-strong range, a pattern consistent with modern purple hybrids tested between 29-34% THC. This article consolidates the most consistent field reports with established agronomic and phytochemical science to offer a rigorous, data-informed profile. It covers history, hypothetical lineage, morphology, aroma, flavor, cannabinoid and terpene composition, effects, possible medical uses, and a comprehensive cultivation guide. Because live lab data specific to this cultivar are limited, ranges and comparisons are grounded in peer-reviewed research on purple chemotypes and Thai-influenced genetics, with clear notes where inference is used.