- Klein1, Calvin (Richard) (b. 1942), American fashion designer, known for his understated fashions for both men and women克莱因, 加尔文（·理查德）（生于1942年, 美国时装设计师, 以其设计的男女皆宜的朴素时装闻名）。
- Klein2, Melanie (1882-1960), Austrian-born psychoanalyst. Klein was the first psychologist to specialize in the psychoanalysis of small children. Her discoveries led to an understanding of the more severe mental disorders found in children.克莱茵, 梅勒妮（1882-1960, 奥地利裔精神分析学家, 第一位专门研究幼儿精神分析的心理学家, 她的发现使人们对儿童严重精神失常有所了解）。