Problem-solving is an essential component of mathematics education worldwide. The mathematics curriculum in many countries emphasizes the importance of discussing mathematical problem-solving. Through this aspect, the ability to solve mathematical problems, both routine and non-routine problems, can be investigated. The mindset in solving problems can also be developed by applying problem-solving strategies. The purpose of this study was to analyze the students' mathematical problem-solving ability viewed by gender. This research is descriptive qualitative research. The research subjects consisted of 20 students of class VII at Hidayatullah-Batakte Islamic Boarding School-West Kupang, with 10 male students and 10 female students. Research data was obtained through problem-solving tests and interviews. Data analysis was carried out using three techniques: reducing data, presenting data, and drawing conclusions. The results of this study are 1) there are two categories of problem-solving abilities, namely high and medium; 2) based on the number of indicators met by male and female students, it shows that the mathematical problem-solving ability of female students is better than male students. An important finding in this study is that there is an influence of gender on mathematical problem-solving ability, and gender can determine the level of students' mathematical problem-solving ability. This research can be used as a guideline in conducting further research to investigate other factors affecting students' mathematical problem-solving abilities between male and female students.