紫金牛属（学名：Ardisia）是报春花科下的一个属，为常绿灌木植物，少数为乔木。该属共有400种，分布于热带和亚热带地区。

Ardisia (coralberry or marlberry) is a genus of flowering plants in the family Primulaceae. It was in the former Myrsinaceae family now recognised as the myrsine sub-family Myrsinoideae. They are distributed in the Americas, Asia, Australia, and the Pacific Islands, mainly in the tropics. There are 400 to 500 species.