Superconductivity in the PbO-type structure α–FeSe was reported, with a zero resistance transition temperature of 8K. This compound, α–FeSe, has a layered crystal structure with an Fe-based plane, similar to the layered iron-based quaternary oxypnictides. Unlike high-temperature superconductors, which rely on CuO2 planes, α–FeSe has an Fe-based planar sublattice. The compound was synthesized with Se deficiency, leading to a clean superconducting phase. The crystal structure of α–FeSe consists of stacked FeSe4 tetrahedra. X-ray diffraction analysis confirmed the presence of α–FeSe and trace amounts of β–FeSe. The lattice constants were determined for FeSe0.82 and FeSe0.88. Electrical resistivity measurements showed a superconducting transition at 8K. Magnetic susceptibility measurements indicated a Pauli paramagnet before superconductivity onset, with a sharp drop at 8K. Specific heat measurements confirmed the superconducting transition, with a deviation from BCS theory, suggesting possible impurity phases. Low-temperature X-ray diffraction revealed a structural transformation at ~105K, indicating a possible link to superconductivity. The study highlights the potential of PbO-type compounds in the search for unconventional superconductors.Superconductivity in the PbO-type structure α–FeSe was reported, with a zero resistance transition temperature of 8K. This compound, α–FeSe, has a layered crystal structure with an Fe-based plane, similar to the layered iron-based quaternary oxypnictides. Unlike high-temperature superconductors, which rely on CuO2 planes, α–FeSe has an Fe-based planar sublattice. The compound was synthesized with Se deficiency, leading to a clean superconducting phase. The crystal structure of α–FeSe consists of stacked FeSe4 tetrahedra. X-ray diffraction analysis confirmed the presence of α–FeSe and trace amounts of β–FeSe. The lattice constants were determined for FeSe0.82 and FeSe0.88. Electrical resistivity measurements showed a superconducting transition at 8K. Magnetic susceptibility measurements indicated a Pauli paramagnet before superconductivity onset, with a sharp drop at 8K. Specific heat measurements confirmed the superconducting transition, with a deviation from BCS theory, suggesting possible impurity phases. Low-temperature X-ray diffraction revealed a structural transformation at ~105K, indicating a possible link to superconductivity. The study highlights the potential of PbO-type compounds in the search for unconventional superconductors.