Cash waqf is a sort of waqf that is also known as a movable waqf which that can be used for the development of Ummah. To achieve this objective, there are a lot of cooperation among Muslim donors are needed to keep contribute the cash waqf in order to ensure sufficient for the waqf project development in the future. Undeniably, collection of cash waqf fund brings more benefits for society than disadvantaged. Therefore, this research aimed investigating the factor influencing intention to repeat cash waqf contribution among Muslim donors in Kulim, Kedah by employing Theory of Planned Behaviour (TPB). The independent variables for this research are attitude, past behavior, perceived behaviour control and trust on organization. The questionnaires consist of 2 sections with total 30 questions were randomly distributed to the respondents among Muslim donors in Kulim and successfully collected 384 feedbacks. These collected data were analyzed using SPSS version 26. The Pearson’s Correlation Coefficient, Descriptive Analysis and Reliability Test were used to determine the reliabilities for the all variables. The findings revealed that attitude, past behavior, perceived behaviour control and trust on organization are significant to the dependent variables, intention to repeat cash waqf contribution among Muslim donors. In addition, based on Pearson’s Correlation Analysis resulted positive relationship among all the independent variables toward dependent variable. Moreover, the resulted obtained also stated all the variables in this research are reliable and accepted because the Cronbach’s Alpha value is more than 0.70. The implication from this study is it help the waqf organization to intensifying an effort in embarking awareness program that could help sensitivity and promote giving culture that led to repeated in cash waqf contribution for development of socio-economic of the Ummah in the future.