The aim of this chapter is to examine the sources of the gender wage gap in the Senegalese labour market. Based on a combination of human capital theory and the theory of discrimination, we analyse the dynamics of gender inequalities between 2015 and 2021. We use the Senegalese national employment survey (ENES, 2015) and the harmonized survey on living conditions (EHCVM, 2021) for econometric estimations. Selectivity bias correction, Oaxaca-Blinder linear decomposition and Firpo-Fortin-Lemieux recentred influence function (RIF) regressions allow us to breakdown the mean gender wage gap and the gap at different levels of wage distribution. The results show that in 2015, 45% of the gap, on average, is justified by differences in observed productive characteristics in favour of men, while 55% of the gap is due to discrimination effect. In 2021 these proportions are 60.24% (productive characteristics) and 39.76% (discrimination). For wage distribution, the results reveal that the share related to discrimination effect decreases, while differences of observed productive characteristics increase. Women are discriminated against in their early years, but as they gain experience, they are more valued. The results of this chapter justify the need to intensify the policies of gender equality by improving women’s productive abilities.