Based on World value survey (3 waves: 2001, 2008 & 2012) the happiness inequality in Egypt has been enlarged. This paper illustrates the concept of happiness inequality and analysis the status of happiness inequality in Egypt. Also the paper aim to determine the main factors affecting happiness inequality in Egypt. This paper used RIF regression (Recentered influence function) to investigate the impacts of several factors like: age, educational level, employment status, gender, martial status and health status on happiness inequality in Egypt. We found that increase the population share of middle age people and increase unemployment rate can enlarge Egypt’s happiness inequality. While an increase in educational level, improvement in health and having good job has a reducing impact on happiness inequality.