This study aims to examine the influence of social capital dimensions and individual motivations on online knowledge-sharing behavior and its impact on participation in user-generated online travel communities. The social capital dimensions investigated include trust, social interaction, and shared language, while individual motivation consists of the need to belong, altruism, and reputation. A quantitative research approach was employed involving 122 active members of online travel communities in Indonesia who participated through Instagram and Facebook platforms. The sample was selected using purposive sampling based on criteria relevant to the research objectives. Data were analyzed using Partial Least Squares-Structural Equation Modeling (PLS-SEM) to assess the relationships among the variables. The findings reveal that the dimensions of social capital do not have a significant effect on online knowledge-sharing behavior. In contrast, individual motivation has a positive and significant influence on online knowledge sharing. Furthermore, online knowledge-sharing behavior is found to positively affect members’ participation in online travel communities. These results suggest that motivational factors play a more important role in encouraging knowledge-sharing activities than social capital factors. Therefore, community managers should focus on strengthening members’ motivations, such as fostering a sense of belonging, encouraging altruistic behavior, and enhancing reputation-building opportunities, to improve engagement and participation within online travel communities.
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