This paper aims at studying how triple oppression of race, class, and gender intersect together to repress African American women in the American society. This paper reveals African American women's suffering in the male-centered patriarchal society. In addition to the burden of their arrival to the United States as slaves, African American women have experienced social injustice because of their race, class, and gender. Their predicament is reinforced by different types of oppression. They also suffer from other plights such as illiteracy and gender bias in education and work. The researcher applies the concept of “intersecting oppression of race, class, and gender" (Collins, 2000, p.8). For Collins, “Intersecting oppression" have three different dimensions: political, economical and ideological (p.4). In addition, the researcher uses the concepts of “interpersonal oppression" and internal oppression" (David & Derthick, 2018, p. 76) as two connected types of oppression. The researcher analyzes the three different dimensions of “intersecting oppression of race, class, and gender" in the lives of the female characters in Lynn Nottage's play “Intimate Apparel". Nottage discusses the plight of Esther who is a representative of African American women in the American society. Through applying the concept of “intersecting oppression of race, class, and gender" to Nottage's “Intimate Apparel", the researcher asserts the submissiveness of the female characters to such oppression. The paper sheds light on the oppression practiced by African American women among themselves.