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Aim: This study aimed to examine the prescription of antibiotics for endodontic infections among undergraduate dental students. Methods: Two government Iraqi dental schools [(the University of Baghdad (UOB) (n=99) and University of Babylon (UB) (n=70)], and one private dental school [Osouldeen University College (OUC) (n=103)] were included in this survey study. A paper-based questionnaire composed of seven questions was distributed to students, and collected. A chi-square test was used for data analysis, and the level of significance was set at 0.05 (P=0.05). Results: A statistically significant difference (P<0.05) was identified between students' answers in the three dental schools regarding antibiotic selection for endodontic infections in which patients had no known allergies (P=0.001). In comparison to other dental schools, a statistically significantly higher proportion of respondents from UOB (32%) favored Azithromycin 500mg for treating patients with penicillin hypersensitivity (P=0.003). A high percentage of participants (62.1%) selected antibiotic prescription in cases with necrotic pulp and symptomatic apical periodontitis (with swelling and moderate/severe preoperative symptoms). However, there were no significant differences between the 3 dental schools (P>0.05). Conclusion: In conclusion, a significantly greater percentage of UB chose amoxicillin for the treatment of endodontic infection in patients with no medical allergies. Azithromycin 500mg was selected by UOB as the preferred option in patients who were sensitive to penicillin. Our findings support the need for the implementation of strategies to raise awareness of good antibiotic prescribing practices among dentists in Iraq. [ABSTRACT FROM AUTHOR]