There is an argument that the Internet of Things (IoT) adoption is relatively low especially in the construction industry. Hence, an initiative to examine the IoT adoption amongst contractors becomes the main focus of this study. This initiative is achieved by studying the current standing on relationship of attitudes, awareness, readiness and barriers towards the IoT adoption among contractors in Kelantan. Population of this study are enclosed to the 330 contractors that based in Kelantan on the categories of Grade G5, G6 and G6 with the Construction Industry Development Board (CIDB) of Malaysia. These categories are the top three of highest-rank contractors in Malaysian construction industry that high possibility of having the IoT adoption in their organization. Therefore, the results shown that the attitudes, awareness, readiness and barriers are contributing to the changes in the adoption of IoT among the contractors. Significant relationship between IoT adoption among construction industry has been elaborated accordingly. As such, this study has given some useful indication for enhancing IoT adoption in the construction industry among contractors and the Government of Malaysia might take some action to pursue on the IoT adoption to embrace towards Industrial Revolution 4.0 (IR 4.0) in this country.