The aim of this study is to determine the influence of Reading Comprehension and mathematics communication towards mathematics problem solving ability. The method used in this study is a survey method. Analysis using multiple regression and correlation techniques. Sample size is 29 students. They are saturated samples. The instrument used was essay test to measure Reading Comprehension ability dan mathematics problem solving ability, whereas for mathematics communication was measured by essay test and oral test. Hypothesis testing results show that: 1) there is the influence of Reading Comprehension and mathematics communication together toward mathematics problem solving ability, 2) there is the influence of Reading Comprehension on mathematics problem solving ability, 3) there is the influence of mathematics communication on mathematics problem solving ability. Keywords: Reading Comprehension, Mathematical Communication, Problem Solving Ability