Classic and contemporary definitions of prejudice and discrimination are presented. An updated definition that incorporates Gordon Allport's original conceptualization is offered. Discussion of the four levels of discrimination including individual, organizational, institutional, and cultural is presented. Different conceptualizations of prejudice are organized by explicit versus implicit forms such as old‐fashioned prejudice, modern‐symbolic prejudice, benevolent or paternalistic prejudice, aversive prejudice, ambivalent prejudice, and color‐blind ideology. Forms of discrimination are discussed such as microaggressions, blatant discrimination, subtle discrimination, and covert discrimination. Finally, a discussion of the contact hypothesis is offered.