Spleen is the organ of anatomic & functional component of reticulo­ endothelial system & functions as a complex filter interposed in blood stream. Haematopoietic function of spleen continues & regresses after birth but production of lymphocytes continues in post­natal life. This study was done to correlate the chronological pattern of spleen development in this geographical eastern region of India, Odisha & compare the results from other researchers nationwide & worldwide. Aborted human foetuses without obvious congenital anomaly of gestational age between 12 weeks and 36 weeks were collected and processed for histology by H/E stain to note the differences of fetal spleen with the adult spleen.