Japanese quail (Coturnix japonica) is one of the popular poultry commodities in Indonesia due to its ability to produce affordable eggs with high nutritional value. However, quail eggs are often stigmatized for their relatively high cholesterol content. Supplementation of feed with saponified black soldier fly larvae (BSF-L) oil has been shown to reduce cholesterol levels in both the blood and eggs of quail. This reduction is closely related to cholesterol metabolism, which primarily occurs in the liver. Nevertheless, the effect of saponified BSF-L oil supplementation on the histopathological structure of the quail liver remains unclear. This study aims to investigate the effect of dietary supplementation with saponified BSF-L oil on the histological features of the liver in Japanese quail. This study used nine liver samples of quail taken randomly from three treatment groups. The treatment groups were: (1) P0 (basal feed without supplementation of saponified BSF-L oil); (2) P1 (basal feed + 1% saponified BSF-L oil); and (3) P2 (basal feed + 2% saponified BSF-L oil). The treatment was conducted for 60 days. The liver samples were processed into histological preparations with hematoxylin-eosin staining. Quantitative analysis of pathological changes, such as hepatocellular vacuolation or hepatic steatosis, was performed using ImageJ software. Data were analyzed using a parametric statistical test (Analysis of Variance, ANOVA) with a significance level of p < 0.05. The results showed histological alterations such as congestion, sinusoidal dilatation, and vacuolization in the P1 and P2 groups. Furthermore, quantitative analysis indicated a significant difference (p < 0.05) in hepatic steatosis in the P2 group. It can be concluded that dietary supplementation with saponified BSF-L oil affects the degree of hepatic steatosis in Japanese quail, particularly at the 2% supplementation level.