This study examines the moderating effect of ownership structure on the relationship between intellectual capital and value (Tobin’s Q) of listed financial services firms in Nigeria using a panel data of 33 sampled firms for the period of ten years (2013-2022). The data were extracted from the annual account and reports of the sample firms. Hierarchical Multiple regression technique was employed in analysing the data. Based on the analyses of the data collected, the study found that human capital efficiency (HCE) and relational capital efficiency (RCE) are positive and significant in influencing the firm value (Tobin’s Q) of the sampled firms. Structural capital efficiency (SCE) is also found to be positive but insignificant to firm value (Tobin’s Q). However, capital employed efficiency (CEE) is negative but significantly related to value (Tobin’s Q) of the listed financial services firms in Nigeria. In addition, the results of the study also revealed that ownership structure index is positive and significantly related to value (Tobin’s Q) of the listed financial services firms in Nigeria. Finally, the study discovered that ownership structure index has a moderating effect on the relationship between intellectual capital and value (Tobin’s Q) of listed financial services firms in Nigeria.