Abstract: An experimental study on seismic performances of five beam-column connections subjected to reversed cyclic loading was conducted. These performances included failure pattern, hysteresis characteristics, displacement-restoring capacity, displacement ductility, and energy dissipation. The objective of the study is to develop guidelines for the design of precast prestressed concrete beam-to-column connection with unbonded tendons for regions of high seismicity. The study results show that the performances of precast prestressed beam-to-column concrete connections with unbonded tendons are equal or superior to that of a monolithic connection .