In this study, financial knowledge is functioned as a mediator variable to reveal how investors' attitudes toward money influence their financial satisfaction. The questionnaire is conducted to assess the validity of the constructs and the interrelationships between the variables, as well as to give relative weights to the assessment criteria for money attitude and its effect on financial satisfaction. Money Attitude (MA) is a measure of attitude about money that is broken down into four primary categories: avoidance, worship, status, and vigilance. A sample of 400 respondents was used. Partial Least Square Modeling (Smart-PLS) version 3.0 software was employed for analyzing data. The findings indicated that there is a significant relationship between money attitude and financial satisfaction. Also, the attitude toward money has a significant effect on financial knowledge. Moreover, it suggested that there is a significant effect of financial knowledge as a mediator variable on the relationship between money attitude and financial satisfaction of individuals in the Egyptian Stock Exchange.