In accordance with embodiments, there are provided mechanisms and methods for facilitating dynamic cross-block joining of reports in an on-demand services environment in a multi-tenant environment according to one embodiment. In one embodiment and by way of example, a method includes receiving, at a server computing device, a joining request to merge a plurality of reports into a joined report, each of the plurality of reports having data including customer relationship management (CRM) data, where the request is placed at a client computing device, and merging the plurality of report into the joined report. The joined report comprises a single report representing the merged plurality of reports. The method may further include facilitating access, via a user interface at the client computing device, to the plurality of reports represented as the joined report.