A modular conference tabletop assembly allows meeting participants and office staff to quickly and effectively change the length of the conference table as the needs of the meeting participants change. The tabletop assembly includes a first end-top, a second end-top, and a modular insert top. The modular table top assembly is supported by a terminal support under each end top and a center support under each modular insert top. There is a single modesty panel extending between each support. The modular conference table is expanded by adding an additional number of modular insert tops, modesty panels, and center supports.