Biomimetic dimerization is a fascinating pathway to natural product synthesis. By using structurally inferior monomers, complex molecular architectures can be readily established with distinct efficiency and elegance. In this Account, our investigation on biomimetic dimerization in natural product synthesis has been summarized, which includes our synthetic exploration of linderaspirone A, bi-linderone, parvistemin A, (±)-diperezone, scabellone B, and spiroxins A/C/D.