The northern regions of the State of Iraq are famous for growing and consuming a large amount of walnuts, whether as a basic ingredient for breakfast or for making sweets. Therefore, large quantities of walnut shells (WSs) are produced annually in these areas. In this work, the coarse aggregate was once replaced with walnut shell waste, and the fine aggregate was replaced with this waste. From the results, a weight reduction is noticed since walnut shells have partially replaced the aggregate. For 50% WSs, the concrete weight decreased by a maximum of 9.14% and 8.82 for coarse and fine WSs, respectively. For concrete, the largest increases in strength metrics were 18.26% and 29.9% when 5% of the typical aggregate was replaced by 5% coarse and fine WSs, respectively. Based on the UPV (ultrasonic pulse velocity) values, the reference mix and mixes contain 5 and 10 percent walnut shell aggregate, regardless of its grain gradation, which is among the good quality concrete, since the test values were greater than or equal to 4.