Organizational citizenship behavior refers to “individual behavior that is discretionary, not directly or explicitly recognized by the formal reward system, and that in the aggregate promotes the effective functioning of the organization (Organ, 1988, p. 4)”. Previous research suggests organizational citizenship behavior can be a beneficial concept in a collaborative learning setting because it may affect learning outcomes, student satisfaction, and social loafing in organizations and teams. However, a measure of organizational citizenship behavior in the collaborative learning setting does not exist. This research aimed to adapt and validate the measurement of organizational citizenship behavior in a collaborative learning setting. 511 college students in Korea participated in this study. First, we conducted exploratory analysis, and as a result, four dimensions were extracted: altruism, conscientiousness, sportsmanship, and courtesy. Subsequently, we conducted confirmatory factor analysis to examine the stability of multidimensionality, and the result indicated the four-factor structure has a reasonable fit statistically. In addition, we examined convergent, discriminant and criterion validities. With this validated measurement, future studies can examine how organizational citizenship behavior in the collaborative learning is related to other learning constructs such as student engagement and academic achievement.