Dynamic pyroelectric techniques have been used to study single crystal triglycine sulfate hysteresis loops at room temperature. An apparent polarization bias is observed and is similar to that reported earlier for BaTiO3. The apparent polarization bias can be shifted with the application of a dc electric field. When precautions are taken to eliminate electrode‐edge effects, the pyroelectric hysteresis loops are always symmetric. The apparent polarization bias is ascribed to electrode‐edge effects as in the case of BaTiO3.