Adriaen Isenbrandt or Adrien, Isenbrant, Ysenbrant, Ysenbrandt or Hysebrant (between 1480 and 1490 – Bruges, July 1551), was a Flemish Northern Renaissance painter, who from documentary evidence was clearly a significant artist of his period, but to whom no specific works can be clearly documented. As hypothesised by art historians, he ran a large workshop specializing in religious subjects and devotional paintings, painting conservatively in the tradition of Early Netherlandish painting. He is believed by some to be the anonymous Master of the Seven Sorrows of the Virgin. Other art historians doubt that any works can be reliably attributed to him, and the number of paintings attributed to him by major museums has been in decline for many decades.