The objective of this research was to explain the correlation between EFL students’ attitude and their plagiarism in academic writing. This research was conducted at the fifth to ninth-semester students of English Department UIN Walisongo Semarang 2021/2022 with the total of 136 students as the population. The sampling technique was random sampling and it was found 102 samples through Slovin formula calculation. The researcher took at the seventh to ninth-semester students as the trial sample to measure validity and reliability of research instrument and the researcher chose the fifth to ninth-semester students who already got writing for academic purposes class as the sample of the research. In collecting the data, the researcher distributed the questionnaire to describe EFL students' attitude in academic writing, plagiarism phenomenon in academic writing, and the correlation between ELF students’ attitude and their plagiarism in academic writing. This research design was quantitative approach with correlational method. Data analysis used in this research was descriptive statistics, normality test, and correlation test. Correlation Pearson Test was used to analyze the data and the hypothesis testing was computed using SPSS version 25.0. After giving instrument to trial sample, the researcher analyzed the data, it was found that reliability of EFL students' attitude was 0.829. It meant that EFL students' attitude instrument was reliable. The result of reliability of students’ plagiarism was 0.809. It meant that EFL students’ plagiarism in academic writing was reliable. After calculating the data, the researcher found that significance correlation was 0.000. The value of significance correlation was <0.05. It meant that EFL students’ attitude and Students’ Plagiarism have a good significant correlation. The research’s result can be interpreted that there was significant correlation between EFL students’ attitude and their plagiarism in academic writing.