Introduction: Plagiarism is one of the most frequent and serious forms of misconduct in academic environment. The cross-sectional survey study was done with aim to explore the attitudes toward plagiarism. Materials and methods: First year students of Faculty of Pharmacy and Medical Biochemistry, University of Zagreb, Croatia (N = 146) were anonymously tested using Attitude toward Plagiarism (ATP) questionnaire. The questionnaire is composed of 29 statements on a 5 point Likert scale, (1 - strongly disagree, 2 - disagree, 3 - neither agree nor disagree, 4 - agree and 5 - strongly agree) measuring three attitudinal factors (positive and negative attitude and subjective norms) toward plagiarism. Results were presented as score (mean ± SD) followed by reference range (divided in three equal parts: low, moderate and high score). Score range expends from 12 to 60 (low: 12-28; moderate: 29-45; high: 46-60) measuring positive attitude toward plagiarism, from 7 to 35 (low: 7-16; moderate: 17-26; high: 27-35) measuring negative attitude toward plagiarism and from 10 to 50 (low: 10-23; moderate: 24-37; high: 38-50) measuring subjective norms. Response rate was 99% (N = 144). Results: Results revealed moderate positive attitude (36 ± 7) and subjective norms (32 ± 6) toward plagiarism and moderate to high negative attitude (26 ± 4). Plagiarism is perceived as not very important (63% of students), harmless (59%), justified under special circumstances (42%), and sometimes necessary (35%). Conclusion: Students' attitudes reflect insufficient level of seriousness and awareness with which plagiarism is perceived. They are lacking knowledge on scientific methodology, academic and scientific misconduct. Plan and program to educate students about academic integrity and research methodology is required on all educational level.