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Topologically ordered porous structures (TOPSs) have shown great potential in biomedical application. For biodegradable application, TOPS can prove to be advantageous especially for iron-based biodegradable materials. However, limited work has been reported which discusses the fabrication and characterization of iron-based TOPS. Hence, in the present work, topologically ordered open cell porous iron foam (TOPIF) was developed using a novel fabrication procedure consisting of 3D printing and pressureless microwave sintering. Different unit cell structures namely cubic, truncated octahedron and pyramid were used. Porosities in the range of 45.6–86.9% and 5–22% variation in dimensions were obtained. Compressive modulus of elasticity, plateau stress and ultimate compressive strength of TOPIF with 45.6–86.9% porosity were found in the range of 218.67–854.04 MPa, 4.24–21.60 MPa and 13.16–52.06 MPa respectively. Moreover, flexural modulus of elasticity and ultimate flexural strength in the range of 161–753 MPa and 9–38 MPa respectively were obtained. Analysis based on Gibson-Ashby model was performed and good agreement with experimental results was obtained. A comparative study showed that the fabricated TOPIF samples possessed ideal properties as required for an augmentation procedure of a human cancellous bone. Keywords: Porous iron, 3D printing, Microwave sintering, Morphology, Mechanical characterization