A one-pot protocol was used to obtain 1,2,3-tri- and 1,1,2,3-tetrasubstituted bis(guanidine)s from readily available bis(thiourea)s in good to excellent yields. This facile strategy was used to afford products that contain a range of terminal and bridging groups. Less sterically demanding cyclic and acyclic secondary alkylamines as well as primary amines and anilines were used in this approach.