The antiobesity effects of Coleus forskohlii were investigated in ovariectomized (ovx) rats. Eight-week-old female Wistar rats were assigned to four groups: a sham-operated group fed the control diet (MF, sham-m) ; an ovx-m group fed the control diet; a sham-operated group fed the control diet containing 50 g/kg of Coleus forskohlii extract (sham-c) ; and an ovx-c group fed the control diet containing 50 g/kg of Coleus forskohlii extract. The body weight, adipose tissues, and cell diameter were investigated in ovx rats after Coleus forskohlii extract treatment. Administration of Coleus forskohlii extracts reduced body weight, food intake, and fat accumulation in ovx rats. Our results suggest that Coleus forskohlii may be useful in the treatment of obesity.