刺果苏木（学名：Caesalpinia bonduc），又名老虎心、大托叶云实，为豆科云实属的植物。分布于**以及中国大陆的广西、广东等地，常生长在海岸灌丛。

Caesalpinia bonduc, commonly known as Gray Nicker, is a species of flowering plant in the senna family, Caesalpiniaceae, that has a pantropical distribution. It is a vine-like shrub that reaches a length of 6 m (20 ft) and scrambles over other vegetation. Stems are covered in curved spines. Its 2 cm (0.79 in) gray seeds, known as nickernuts, are buoyant and durable enough to be dispersed by ocean currents.