Kurosawa is a Japanese surname meaning "black swamp," composed of the characters for "black" and "swamp." This name ranks 86th among Japanese family names and is found throughout the country, reflecting its widespread adoption across different regions and communities. The surname carries a distinctly geographical character, suggesting ancestral connections to wetland areas or marshes that were common in historical Japan. Kurosawa has gained significant international recognition, particularly through its most famous bearer, filmmaker Kurosawa Akira, whose cinematic works influenced generations of directors worldwide.

The surname emerged during Japan's feudal period when families adopted names based on geographical features of their settlements. Like many Japanese surnames rooted in landscape terminology, Kurosawa developed among farming communities and those living near marshy or swampy regions. The name's prevalence nationwide indicates that multiple unrelated families adopted similar nomenclature independently, a common pattern in Japanese naming conventions. Over centuries, various branches of the Kurosawa family established themselves in different prefectures, contributing to its broad distribution.

The character composition of this name reflects the practical, descriptive approach Japanese people historically took toward family naming. The "black" element may reference seasonal color changes in marshland vegetation or the dark appearance of swampy terrain. This specificity in naming conventions provided a valuable record of ancestral landscapes and settlement patterns in pre-modern Japan. The surname's straightforward meaning makes it easily recognizable and memorable, even to those unfamiliar with Japanese naming traditions.

Kurosawa Akira's international acclaim brought unprecedented global recognition to this surname. His films such as Rashomon and Seven Samurai introduced Japanese cinema to Western audiences and established him as one of history's most influential directors. Today, the name Kurosawa carries associations with artistic achievement and cultural significance. International film enthusiasts and Japanese culture researchers frequently encounter this name, making it one of the most recognizable Japanese surnames outside Japan.